64818366 has 16 divisors (see below), whose sum is σ = 130921488. Its totient is φ = 21392000.

The previous prime is 64818361. The next prime is 64818371. The reversal of 64818366 is 66381846.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64818361) and next prime (64818371).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64818361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52875 + ... + 54086.

It is an arithmetic number, because the mean of its divisors is an integer number (8182593).

Almost surely, 2^64818366 is an apocalyptic number.

64818366 is an abundant number, since it is smaller than the sum of its proper divisors (66103122).

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

64818366 is a wasteful number, since it uses less digits than its factorization.

64818366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107067.

The product of its digits is 165888, while the sum is 42.

The square root of 64818366 is about 8050.9854055265. The cubic root of 64818366 is about 401.6977133956.

The spelling of 64818366 in words is "sixty-four million, eight hundred eighteen thousand, three hundred sixty-six".