5661904 has 10 divisors (see below), whose sum is σ = 10969970. Its totient is φ = 2830944.

The previous prime is 5661899. The next prime is 5661907. The reversal of 5661904 is 4091665.

It can be written as a sum of positive squares in only one way, i.e., 5053504 + 608400 = 2248^2 + 780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176919 + ... + 176950.

It is an arithmetic number, because the mean of its divisors is an integer number (1096997).

Almost surely, 2^5661904 is an apocalyptic number.

It is an amenable number.

5661904 is a deficient number, since it is larger than the sum of its proper divisors (5308066).

5661904 is a wasteful number, since it uses less digits than its factorization.

5661904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353877 (or 353871 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 5661904 is about 2379.4755724739. The cubic root of 5661904 is about 178.2327469176.

The spelling of 5661904 in words is "five million, six hundred sixty-one thousand, nine hundred four".