64437 has 8 divisors (see below), whose sum is σ = 87936. Its totient is φ = 41952.

The previous prime is 64433. The next prime is 64439. The reversal of 64437 is 73446.

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

It is not a de Polignac number, because 64437 - 2² = 64433 is a prime.

It is a plaindrome in base 11.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88 + ... + 369.

It is an arithmetic number, because the mean of its divisors is an integer number (10992).

2⁶⁴⁴³⁷ is an apocalyptic number.

It is an amenable number.

64437 is a deficient number, since it is larger than the sum of its proper divisors (23499).

64437 is a wasteful number, since it uses less digits than its factorization.

64437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 2016, while the sum is 24.

The square root of 64437 is about 253.8444405537. The cubic root of 64437 is about 40.0908352345.

Subtracting 64437 from its reverse (73446), we obtain a palindrome (9009).

The spelling of 64437 in words is "sixty-four thousand, four hundred thirty-seven".