64895023 has 4 divisors (see below), whose sum is σ = 64931440. Its totient is φ = 64858608.

The previous prime is 64895021. The next prime is 64895057. The reversal of 64895023 is 32059846.

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 64895023 - 2¹ = 64895021 is a prime.

It is a super-2 number, since 2×64895023² = 8422728020341058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64895021) 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, 15390 + ... + 19147.

It is an arithmetic number, because the mean of its divisors is an integer number (16232860).

Almost surely, 2^64895023 is an apocalyptic number.

64895023 is a deficient number, since it is larger than the sum of its proper divisors (36417).

64895023 is a wasteful number, since it uses less digits than its factorization.

64895023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36416.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 64895023 is about 8055.7447203843. The cubic root of 64895023 is about 401.8560060342.

The spelling of 64895023 in words is "sixty-four million, eight hundred ninety-five thousand, twenty-three".