64438627 has 16 divisors (see below), whose sum is σ = 71745408. Its totient is φ = 57386880.

The previous prime is 64438607. The next prime is 64438637. The reversal of 64438627 is 72683446.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64438627 - 2⁷ = 64438499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64438627.

It is not an unprimeable number, because it can be changed into a prime (64438607) 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, 148603 + ... + 149035.

It is an arithmetic number, because the mean of its divisors is an integer number (4484088).

Almost surely, 2^64438627 is an apocalyptic number.

64438627 is a deficient number, since it is larger than the sum of its proper divisors (7306781).

64438627 is a wasteful number, since it uses less digits than its factorization.

64438627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its digits is 193536, while the sum is 40.

The square root of 64438627 is about 8027.3673766684. The cubic root of 64438627 is about 400.9117265578.

The spelling of 64438627 in words is "sixty-four million, four hundred thirty-eight thousand, six hundred twenty-seven".