57660769 has 2 divisors, whose sum is σ = 57660770. Its totient is φ = 57660768.

The previous prime is 57660749. The next prime is 57660773. The reversal of 57660769 is 96706675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31528225 + 26132544 = 5615^2 + 5112^2 .

It is a cyclic number.

It is not a de Polignac number, because 57660769 - 2¹⁹ = 57136481 is a prime.

It is a super-2 number, since 2×57660769² = 6649528563342722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57660749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28830384 + 28830385.

It is an arithmetic number, because the mean of its divisors is an integer number (28830385).

Almost surely, 2^57660769 is an apocalyptic number.

It is an amenable number.

57660769 is a deficient number, since it is larger than the sum of its proper divisors (1).

57660769 is an equidigital number, since it uses as much as digits as its factorization.

57660769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 57660769 is about 7593.4688384163. The cubic root of 57660769 is about 386.3315205164.

The spelling of 57660769 in words is "fifty-seven million, six hundred sixty thousand, seven hundred sixty-nine".