57640327 has 4 divisors (see below), whose sum is σ = 57962520. Its totient is φ = 57318136.

The previous prime is 57640321. The next prime is 57640333. The reversal of 57640327 is 72304675.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (57640321) and next prime (57640333).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57640327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57640292 and 57640301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57640321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160828 + ... + 161185.

It is an arithmetic number, because the mean of its divisors is an integer number (14490630).

Almost surely, 2^57640327 is an apocalyptic number.

57640327 is a deficient number, since it is larger than the sum of its proper divisors (322193).

57640327 is a wasteful number, since it uses less digits than its factorization.

57640327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322192.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 57640327 is about 7592.1226939506. The cubic root of 57640327 is about 386.2858608040.

The spelling of 57640327 in words is "fifty-seven million, six hundred forty thousand, three hundred twenty-seven".