61790904 has 64 divisors (see below), whose sum is σ = 196166400. Its totient is φ = 17654112.

The previous prime is 61790887. The next prime is 61790933. The reversal of 61790904 is 40909716.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18922 + ... + 21945.

It is an arithmetic number, because the mean of its divisors is an integer number (3065100).

Almost surely, 2^61790904 is an apocalyptic number.

It is an amenable number.

61790904 is an abundant number, since it is smaller than the sum of its proper divisors (134375496).

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

61790904 is a wasteful number, since it uses less digits than its factorization.

61790904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40889 (or 40879 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 61790904 is about 7860.7190510792. The cubic root of 61790904 is about 395.3437247355.

The spelling of 61790904 in words is "sixty-one million, seven hundred ninety thousand, nine hundred four".