61326321 has 16 divisors (see below), whose sum is σ = 94768128. Its totient is φ = 34549200.

The previous prime is 61326313. The next prime is 61326323. The reversal of 61326321 is 12362316.

It is a happy number.

It is not a de Polignac number, because 61326321 - 2³ = 61326313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61326291 and 61326300.

It is not an unprimeable number, because it can be changed into a prime (61326323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19075 + ... + 22056.

It is an arithmetic number, because the mean of its divisors is an integer number (5923008).

Almost surely, 2^61326321 is an apocalyptic number.

It is an amenable number.

61326321 is a deficient number, since it is larger than the sum of its proper divisors (33441807).

61326321 is a wasteful number, since it uses less digits than its factorization.

61326321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41212.

The product of its digits is 1296, while the sum is 24.

The square root of 61326321 is about 7831.1123730923. The cubic root of 61326321 is about 394.3504166067.

Adding to 61326321 its reverse (12362316), we get a palindrome (73688637).

The spelling of 61326321 in words is "sixty-one million, three hundred twenty-six thousand, three hundred twenty-one".