64866018 has 64 divisors (see below), whose sum is σ = 153538560. Its totient is φ = 17884800.

The previous prime is 64866007. The next prime is 64866037. The reversal of 64866018 is 81066846.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239223 + ... + 239493.

It is an arithmetic number, because the mean of its divisors is an integer number (2399040).

Almost surely, 2^64866018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64866018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76769280).

64866018 is an abundant number, since it is smaller than the sum of its proper divisors (88672542).

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

64866018 is a wasteful number, since it uses less digits than its factorization.

64866018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 64866018 is about 8053.9442511108. The cubic root of 64866018 is about 401.7961269152.

It can be divided in two parts, 648 and 66018, that added together give a palindrome (66666).

The spelling of 64866018 in words is "sixty-four million, eight hundred sixty-six thousand, eighteen".