61604464 has 20 divisors (see below), whose sum is σ = 126380304. Its totient is φ = 28990208.

The previous prime is 61604407. The next prime is 61604467. The reversal of 61604464 is 46440616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61604467) 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, 112972 + ... + 113515.

Almost surely, 2^61604464 is an apocalyptic number.

It is an amenable number.

61604464 is an abundant number, since it is smaller than the sum of its proper divisors (64775840).

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

61604464 is a wasteful number, since it uses less digits than its factorization.

61604464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226512 (or 226506 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 61604464 is about 7848.8511261203. The cubic root of 61604464 is about 394.9457042285.

The spelling of 61604464 in words is "sixty-one million, six hundred four thousand, four hundred sixty-four".