638057 has 4 divisors (see below), whose sum is σ = 729216. Its totient is φ = 546900.

The previous prime is 638051. The next prime is 638059. The reversal of 638057 is 750836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 638057 - 2¹² = 633961 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 638057.

It is not an unprimeable number, because it can be changed into a prime (638051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45569 + ... + 45582.

It is an arithmetic number, because the mean of its divisors is an integer number (182304).

2⁶³⁸⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

638057 is a deficient number, since it is larger than the sum of its proper divisors (91159).

638057 is an equidigital number, since it uses as much as digits as its factorization.

638057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91158.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 638057 is about 798.7847019066. The cubic root of 638057 is about 86.0900894768.

The spelling of 638057 in words is "six hundred thirty-eight thousand, fifty-seven".