61604264 has 16 divisors (see below), whose sum is σ = 116097300. Its totient is φ = 30644992.

The previous prime is 61604237. The next prime is 61604267. The reversal of 61604264 is 46240616.

It can be written as a sum of positive squares in 2 ways, for example, as 58400164 + 3204100 = 7642^2 + 1790^2 .

It is not an unprimeable number, because it can be changed into a prime (61604267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17969 + ... + 21120.

Almost surely, 2^61604264 is an apocalyptic number.

It is an amenable number.

61604264 is a deficient number, since it is larger than the sum of its proper divisors (54493036).

61604264 is a wasteful number, since it uses less digits than its factorization.

61604264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39292 (or 39288 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 61604264 is about 7848.8383853918. The cubic root of 61604264 is about 394.9452768286.

The spelling of 61604264 in words is "sixty-one million, six hundred four thousand, two hundred sixty-four".