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64893 = 397223

64893 has 8 divisors (see below), whose sum is σ = 87808. Its totient is φ = 42624.

The previous prime is 64891. The next prime is 64901. The reversal of 64893 is 39846.

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

It is not a de Polignac number, because 64893 - 21 = 64891 is a prime.

It is a super-2 number, since 2×648932 = 8422202898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64893.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64893.

It is not an unprimeable number, because it can be changed into a prime (64891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180 + ... + 402.

It is an arithmetic number, because the mean of its divisors is an integer number (10976).

264893 is an apocalyptic number.

It is an amenable number.

64893 is a deficient number, since it is larger than the sum of its proper divisors (22915).

64893 is a wasteful number, since it uses less digits than its factorization.

64893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323.

The product of its digits is 5184, while the sum is 30.

The square root of 64893 is about 254.7410449849. The cubic root of 64893 is about 40.1851830248.

The spelling of 64893 in words is "sixty-four thousand, eight hundred ninety-three".

Divisors: 1 3 97 223 291 669 21631 64893