61604444 has 24 divisors (see below), whose sum is σ = 119832048. Its totient is φ = 27472640.

The previous prime is 61604407. The next prime is 61604467. The reversal of 61604444 is 44440616.

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 7 ways as a sum of consecutive naturals, for example, 10877 + ... + 15540.

It is an arithmetic number, because the mean of its divisors is an integer number (4993002).

Almost surely, 2^61604444 is an apocalyptic number.

It is an amenable number.

61604444 is a deficient number, since it is larger than the sum of its proper divisors (58227604).

61604444 is a wasteful number, since it uses less digits than its factorization.

61604444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26485 (or 26483 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 61604444 is about 7848.8498520484. The cubic root of 61604444 is about 394.9456614885.

The spelling of 61604444 in words is "sixty-one million, six hundred four thousand, four hundred forty-four".