64654438 has 4 divisors (see below), whose sum is σ = 96981660. Its totient is φ = 32327218.

The previous prime is 64654399. The next prime is 64654459. The reversal of 64654438 is 83445646.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64654438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16163608 + ... + 16163611.

It is an arithmetic number, because the mean of its divisors is an integer number (24245415).

Almost surely, 2^64654438 is an apocalyptic number.

64654438 is a deficient number, since it is larger than the sum of its proper divisors (32327222).

64654438 is a wasteful number, since it uses less digits than its factorization.

64654438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32327221.

The product of its digits is 276480, while the sum is 40.

The square root of 64654438 is about 8040.7983434482. The cubic root of 64654438 is about 401.3587914877.

The spelling of 64654438 in words is "sixty-four million, six hundred fifty-four thousand, four hundred thirty-eight".