75681730 has 32 divisors (see below), whose sum is σ = 142777728. Its totient is φ = 28828800.

The previous prime is 75681701. The next prime is 75681803. The reversal of 75681730 is 3718657.

It is a self number, because there is not a number n which added to its sum of digits gives 75681730.

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, 64045 + ... + 65215.

It is an arithmetic number, because the mean of its divisors is an integer number (4461804).

Almost surely, 2^75681730 is an apocalyptic number.

75681730 is a deficient number, since it is larger than the sum of its proper divisors (67095998).

75681730 is a wasteful number, since it uses less digits than its factorization.

75681730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 75681730 is about 8699.5246996603. The cubic root of 75681730 is about 422.9902435774.

The spelling of 75681730 in words is "seventy-five million, six hundred eighty-one thousand, seven hundred thirty".