63345321 has 40 divisors (see below), whose sum is σ = 104350400. Its totient is φ = 38047968.

The previous prime is 63345313. The next prime is 63345329. The reversal of 63345321 is 12354336.

It is a happy number.

63345321 is a `hidden beast` number, since 6 + 334 + 5 + 321 = 666.

63345321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (63345313) and next prime (63345329).

It is not a de Polignac number, because 63345321 - 2³ = 63345313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63345329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44580 + ... + 45978.

It is an arithmetic number, because the mean of its divisors is an integer number (2608760).

Almost surely, 2^63345321 is an apocalyptic number.

It is an amenable number.

63345321 is a deficient number, since it is larger than the sum of its proper divisors (41005079).

63345321 is a wasteful number, since it uses less digits than its factorization.

63345321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1458 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 63345321 is about 7958.9773840613. The cubic root of 63345321 is about 398.6314081480.

Adding to 63345321 its reverse (12354336), we get a palindrome (75699657).

It can be divided in two parts, 633 and 45321, that added together give a palindrome (45954).

The spelling of 63345321 in words is "sixty-three million, three hundred forty-five thousand, three hundred twenty-one".