76712457 has 4 divisors (see below), whose sum is σ = 102283280. Its totient is φ = 51141636.

The previous prime is 76712431. The next prime is 76712491. The reversal of 76712457 is 75421767.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75421767 = 3 ⋅25140589.

It is not a de Polignac number, because 76712457 - 2¹⁴ = 76696073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76712407) 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, 12785407 + ... + 12785412.

It is an arithmetic number, because the mean of its divisors is an integer number (25570820).

Almost surely, 2^76712457 is an apocalyptic number.

It is an amenable number.

76712457 is a deficient number, since it is larger than the sum of its proper divisors (25570823).

76712457 is a wasteful number, since it uses less digits than its factorization.

76712457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25570822.

The product of its digits is 82320, while the sum is 39.

The square root of 76712457 is about 8758.5647796885. The cubic root of 76712457 is about 424.9018587691.

The spelling of 76712457 in words is "seventy-six million, seven hundred twelve thousand, four hundred fifty-seven".