64457 has 4 divisors (see below), whose sum is σ = 66000. Its totient is φ = 62916.

The previous prime is 64453. The next prime is 64483. The reversal of 64457 is 75446.

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 64457 - 2² = 64453 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (64451) 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, 707 + ... + 792.

It is an arithmetic number, because the mean of its divisors is an integer number (16500).

2⁶⁴⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

64457 is a deficient number, since it is larger than the sum of its proper divisors (1543).

64457 is a wasteful number, since it uses less digits than its factorization.

64457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542.

The product of its digits is 3360, while the sum is 26.

The square root of 64457 is about 253.8838317026. The cubic root of 64457 is about 40.0949826124.

The spelling of 64457 in words is "sixty-four thousand, four hundred fifty-seven".