64901893 has 16 divisors (see below), whose sum is σ = 76769280. Its totient is φ = 53712000.

The previous prime is 64901887. The next prime is 64901923. The reversal of 64901893 is 39810946.

It is a cyclic number.

It is not a de Polignac number, because 64901893 - 2⁵ = 64901861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64901803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27868 + ... + 30106.

It is an arithmetic number, because the mean of its divisors is an integer number (4798080).

Almost surely, 2^64901893 is an apocalyptic number.

It is an amenable number.

64901893 is a deficient number, since it is larger than the sum of its proper divisors (11867387).

64901893 is a wasteful number, since it uses less digits than its factorization.

64901893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 64901893 is about 8056.1711128799. The cubic root of 64901893 is about 401.8701861322.

The spelling of 64901893 in words is "sixty-four million, nine hundred one thousand, eight hundred ninety-three".