64266438 has 16 divisors (see below), whose sum is σ = 129782016. Its totient is φ = 21213960.

The previous prime is 64266413. The next prime is 64266457. The reversal of 64266438 is 83466246.

It is a junction number, because it is equal to n+sod(n) for n = 64266396 and 64266405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51378 + ... + 52613.

It is an arithmetic number, because the mean of its divisors is an integer number (8111376).

Almost surely, 2^64266438 is an apocalyptic number.

64266438 is an abundant number, since it is smaller than the sum of its proper divisors (65515578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64266438 is a wasteful number, since it uses less digits than its factorization.

64266438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104099.

The product of its digits is 165888, while the sum is 39.

The square root of 64266438 is about 8016.6350796329. The cubic root of 64266438 is about 400.5543106611.

The spelling of 64266438 in words is "sixty-four million, two hundred sixty-six thousand, four hundred thirty-eight".