57698369 has 2 divisors, whose sum is σ = 57698370. Its totient is φ = 57698368.

The previous prime is 57698353. The next prime is 57698411. The reversal of 57698369 is 96389675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30658369 + 27040000 = 5537^2 + 5200^2 .

It is a cyclic number.

It is not a de Polignac number, because 57698369 - 2⁴ = 57698353 is a prime.

It is a super-2 number, since 2×57698369² = 6658203570520322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57698369.

It is not a weakly prime, because it can be changed into another prime (57698569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28849184 + 28849185.

It is an arithmetic number, because the mean of its divisors is an integer number (28849185).

Almost surely, 2^57698369 is an apocalyptic number.

It is an amenable number.

57698369 is a deficient number, since it is larger than the sum of its proper divisors (1).

57698369 is an equidigital number, since it uses as much as digits as its factorization.

57698369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 57698369 is about 7595.9442467675. The cubic root of 57698369 is about 386.4154765529.

The spelling of 57698369 in words is "fifty-seven million, six hundred ninety-eight thousand, three hundred sixty-nine".