76660457 has 2 divisors, whose sum is σ = 76660458. Its totient is φ = 76660456.

The previous prime is 76660393. The next prime is 76660477. The reversal of 76660457 is 75406667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42133081 + 34527376 = 6491^2 + 5876^2 .

It is a cyclic number.

It is not a de Polignac number, because 76660457 - 2⁶ = 76660393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76660477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38330228 + 38330229.

It is an arithmetic number, because the mean of its divisors is an integer number (38330229).

Almost surely, 2^76660457 is an apocalyptic number.

It is an amenable number.

76660457 is a deficient number, since it is larger than the sum of its proper divisors (1).

76660457 is an equidigital number, since it uses as much as digits as its factorization.

76660457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 76660457 is about 8755.5957535738. The cubic root of 76660457 is about 424.8058296417.

The spelling of 76660457 in words is "seventy-six million, six hundred sixty thousand, four hundred fifty-seven".