64893859 has 4 divisors (see below), whose sum is σ = 65125080. Its totient is φ = 64662640.

The previous prime is 64893847. The next prime is 64893869. The reversal of 64893859 is 95839846.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64893859 - 2⁵ = 64893827 is a prime.

It is a super-2 number, since 2×64893859² = 8422425871823762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64893869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115189 + ... + 115750.

It is an arithmetic number, because the mean of its divisors is an integer number (16281270).

Almost surely, 2^64893859 is an apocalyptic number.

64893859 is a deficient number, since it is larger than the sum of its proper divisors (231221).

64893859 is a wasteful number, since it uses less digits than its factorization.

64893859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231220.

The product of its digits is 1866240, while the sum is 52.

The square root of 64893859 is about 8055.6724734810. The cubic root of 64893859 is about 401.8536033683.

The spelling of 64893859 in words is "sixty-four million, eight hundred ninety-three thousand, eight hundred fifty-nine".