75681904 has 20 divisors (see below), whose sum is σ = 146848240. Its totient is φ = 37785600.

The previous prime is 75681887. The next prime is 75681911. The reversal of 75681904 is 40918657.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9229 + ... + 15379.

It is an arithmetic number, because the mean of its divisors is an integer number (7342412).

Almost surely, 2^75681904 is an apocalyptic number.

It is an amenable number.

75681904 is a deficient number, since it is larger than the sum of its proper divisors (71166336).

75681904 is a wasteful number, since it uses less digits than its factorization.

75681904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6928 (or 6922 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 75681904 is about 8699.5347002009. The cubic root of 75681904 is about 422.9905677431.

The spelling of 75681904 in words is "seventy-five million, six hundred eighty-one thousand, nine hundred four".