76506457 has 4 divisors (see below), whose sum is σ = 76677300. Its totient is φ = 76335616.

The previous prime is 76506449. The next prime is 76506473. The reversal of 76506457 is 75460567.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36614601 + 39891856 = 6051^2 + 6316^2 .

It is a cyclic number.

It is not a de Polignac number, because 76506457 - 2³ = 76506449 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76506427) 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, 84748 + ... + 85645.

It is an arithmetic number, because the mean of its divisors is an integer number (19169325).

Almost surely, 2^76506457 is an apocalyptic number.

It is an amenable number.

76506457 is a deficient number, since it is larger than the sum of its proper divisors (170843).

76506457 is a wasteful number, since it uses less digits than its factorization.

76506457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170842.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 76506457 is about 8746.7969566007. The cubic root of 76506457 is about 424.5211807025.

The spelling of 76506457 in words is "seventy-six million, five hundred six thousand, four hundred fifty-seven".