63451340 has 12 divisors (see below), whose sum is σ = 133247856. Its totient is φ = 25380528.

The previous prime is 63451309. The next prime is 63451369. The reversal of 63451340 is 4315436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1586264 + ... + 1586303.

It is an arithmetic number, because the mean of its divisors is an integer number (11103988).

Almost surely, 2^63451340 is an apocalyptic number.

It is an amenable number.

63451340 is an abundant number, since it is smaller than the sum of its proper divisors (69796516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63451340 is a wasteful number, since it uses less digits than its factorization.

63451340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172576 (or 3172574 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 63451340 is about 7965.6349401664. The cubic root of 63451340 is about 398.8536763266.

Adding to 63451340 its reverse (4315436), we get a palindrome (67766776).

The spelling of 63451340 in words is "sixty-three million, four hundred fifty-one thousand, three hundred forty".