57666793 has 2 divisors, whose sum is σ = 57666794. Its totient is φ = 57666792.

The previous prime is 57666779. The next prime is 57666797. The reversal of 57666793 is 39766675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45535504 + 12131289 = 6748^2 + 3483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57666793 is a prime.

It is not a weakly prime, because it can be changed into another prime (57666797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28833396 + 28833397.

It is an arithmetic number, because the mean of its divisors is an integer number (28833397).

Almost surely, 2^57666793 is an apocalyptic number.

It is an amenable number.

57666793 is a deficient number, since it is larger than the sum of its proper divisors (1).

57666793 is an equidigital number, since it uses as much as digits as its factorization.

57666793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 49.

The square root of 57666793 is about 7593.8654847186. The cubic root of 57666793 is about 386.3449738000.

The spelling of 57666793 in words is "fifty-seven million, six hundred sixty-six thousand, seven hundred ninety-three".