64814893 has 16 divisors (see below), whose sum is σ = 78607872. Its totient is φ = 52632000.

The previous prime is 64814819. The next prime is 64814899. The reversal of 64814893 is 39841846.

It is a cyclic number.

It is not a de Polignac number, because 64814893 - 2²⁵ = 31260461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64814899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2878 + ... + 11743.

It is an arithmetic number, because the mean of its divisors is an integer number (4912992).

Almost surely, 2^64814893 is an apocalyptic number.

It is an amenable number.

64814893 is a deficient number, since it is larger than the sum of its proper divisors (13792979).

64814893 is a wasteful number, since it uses less digits than its factorization.

64814893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14676.

The product of its digits is 165888, while the sum is 43.

The square root of 64814893 is about 8050.7697147540. The cubic root of 64814893 is about 401.6905388803.

The spelling of 64814893 in words is "sixty-four million, eight hundred fourteen thousand, eight hundred ninety-three".