57698391 has 8 divisors (see below), whose sum is σ = 81456624. Its totient is φ = 36202880.

The previous prime is 57698369. The next prime is 57698411. The reversal of 57698391 is 19389675.

57698391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57698391 - 2⁶ = 57698327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57698391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57698341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565620 + ... + 565721.

It is an arithmetic number, because the mean of its divisors is an integer number (10182078).

Almost surely, 2^57698391 is an apocalyptic number.

57698391 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

57698391 is a deficient number, since it is larger than the sum of its proper divisors (23758233).

57698391 is a wasteful number, since it uses less digits than its factorization.

57698391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131361.

The product of its digits is 408240, while the sum is 48.

The square root of 57698391 is about 7595.9456949086. The cubic root of 57698391 is about 386.4155256654.

The spelling of 57698391 in words is "fifty-seven million, six hundred ninety-eight thousand, three hundred ninety-one".