76726731 has 8 divisors (see below), whose sum is σ = 107686720. Its totient is φ = 48458952.

The previous prime is 76726717. The next prime is 76726733. The reversal of 76726731 is 13762767.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76726731 - 2¹³ = 76718539 is a prime.

It is a super-2 number, since 2×76726731² = 11773982499892722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76726731.

It is not an unprimeable number, because it can be changed into a prime (76726733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672985 + ... + 673098.

It is an arithmetic number, because the mean of its divisors is an integer number (13460840).

Almost surely, 2^76726731 is an apocalyptic number.

76726731 is a deficient number, since it is larger than the sum of its proper divisors (30959989).

76726731 is a wasteful number, since it uses less digits than its factorization.

76726731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346105.

The product of its digits is 74088, while the sum is 39.

The square root of 76726731 is about 8759.3796013188. The cubic root of 76726731 is about 424.9282111732.

The spelling of 76726731 in words is "seventy-six million, seven hundred twenty-six thousand, seven hundred thirty-one".