76706731 has 4 divisors (see below), whose sum is σ = 76800312. Its totient is φ = 76613152.

The previous prime is 76706717. The next prime is 76706753. The reversal of 76706731 is 13760767.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76706731 - 2⁵ = 76706699 is a prime.

It is a super-2 number, since 2×76706731² = 11767845161412722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76706701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45550 + ... + 47203.

It is an arithmetic number, because the mean of its divisors is an integer number (19200078).

Almost surely, 2^76706731 is an apocalyptic number.

76706731 is a deficient number, since it is larger than the sum of its proper divisors (93581).

76706731 is an equidigital number, since it uses as much as digits as its factorization.

76706731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93580.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 76706731 is about 8758.2378935491. The cubic root of 76706731 is about 424.8912866114.

The spelling of 76706731 in words is "seventy-six million, seven hundred six thousand, seven hundred thirty-one".