64466900 has 18 divisors (see below), whose sum is σ = 139893390. Its totient is φ = 25786720.

The previous prime is 64466891. The next prime is 64466911. The reversal of 64466900 is 966446.

It can be written as a sum of positive squares in 3 ways, for example, as 6646084 + 57820816 = 2578^2 + 7604^2 .

It is a super-2 number, since 2×64466900² = 8311962391220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322235 + ... + 322434.

It is an arithmetic number, because the mean of its divisors is an integer number (7771855).

Almost surely, 2^64466900 is an apocalyptic number.

It is an amenable number.

64466900 is an abundant number, since it is smaller than the sum of its proper divisors (75426490).

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

64466900 is a wasteful number, since it uses less digits than its factorization.

64466900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644683 (or 644676 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64466900 is about 8029.1282216689. The cubic root of 64466900 is about 400.9703524701.

The spelling of 64466900 in words is "sixty-four million, four hundred sixty-six thousand, nine hundred".