61306904 has 16 divisors (see below), whose sum is σ = 115045920. Its totient is φ = 30628000.

The previous prime is 61306897. The next prime is 61306951. The reversal of 61306904 is 40960316.

61306904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10529 + ... + 15279.

It is an arithmetic number, because the mean of its divisors is an integer number (7190370).

Almost surely, 2^61306904 is an apocalyptic number.

It is an amenable number.

61306904 is a deficient number, since it is larger than the sum of its proper divisors (53739016).

61306904 is a wasteful number, since it uses less digits than its factorization.

61306904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370 (or 6366 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 61306904 is about 7829.8725404696. The cubic root of 61306904 is about 394.3087927700.

The spelling of 61306904 in words is "sixty-one million, three hundred six thousand, nine hundred four".