64655023 has 4 divisors (see below), whose sum is σ = 64818280. Its totient is φ = 64491768.

The previous prime is 64655011. The next prime is 64655027. The reversal of 64655023 is 32055646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64655023 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64655027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81033 + ... + 81826.

It is an arithmetic number, because the mean of its divisors is an integer number (16204570).

Almost surely, 2^64655023 is an apocalyptic number.

64655023 is a deficient number, since it is larger than the sum of its proper divisors (163257).

64655023 is a wasteful number, since it uses less digits than its factorization.

64655023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163256.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 64655023 is about 8040.8347203509. The cubic root of 64655023 is about 401.3600019959.

The spelling of 64655023 in words is "sixty-four million, six hundred fifty-five thousand, twenty-three".