61604412 has 12 divisors (see below), whose sum is σ = 143743656. Its totient is φ = 20534800.

The previous prime is 61604407. The next prime is 61604467. The reversal of 61604412 is 21440616.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 2566839 + ... + 2566862.

It is an arithmetic number, because the mean of its divisors is an integer number (11978638).

Almost surely, 2^61604412 is an apocalyptic number.

It is an amenable number.

61604412 is an abundant number, since it is smaller than the sum of its proper divisors (82139244).

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

61604412 is a wasteful number, since it uses less digits than its factorization.

61604412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133708 (or 5133706 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 61604412 is about 7848.8478135329. The cubic root of 61604412 is about 394.9455931046.

The spelling of 61604412 in words is "sixty-one million, six hundred four thousand, four hundred twelve".