64623 has 8 divisors (see below), whose sum is σ = 92848. Its totient is φ = 39744.

The previous prime is 64621. The next prime is 64627. The reversal of 64623 is 32646.

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

It is not a de Polignac number, because 64623 - 2¹ = 64621 is a prime.

It is a super-2 number, since 2×64623² = 8352264258, which contains 22 as substring.

It is a Duffinian number.

64623 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 64623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64621) 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, 790 + ... + 867.

It is an arithmetic number, because the mean of its divisors is an integer number (11606).

2⁶⁴⁶²³ is an apocalyptic number.

64623 is a deficient number, since it is larger than the sum of its proper divisors (28225).

64623 is a wasteful number, since it uses less digits than its factorization.

64623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673.

The product of its digits is 864, while the sum is 21.

The square root of 64623 is about 254.2105426610. The cubic root of 64623 is about 40.1293727826.

The spelling of 64623 in words is "sixty-four thousand, six hundred twenty-three".