64404966 has 8 divisors (see below), whose sum is σ = 128809944. Its totient is φ = 21468320.

The previous prime is 64404947. The next prime is 64404979. The reversal of 64404966 is 66940446.

It is a sphenic number, since it is the product of 3 distinct primes.

64404966 is an admirable number.

It is a super-2 number, since 2×64404966² = 8295999290922312, 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 3 ways as a sum of consecutive naturals, for example, 5367075 + ... + 5367086.

It is an arithmetic number, because the mean of its divisors is an integer number (16101243).

Almost surely, 2^64404966 is an apocalyptic number.

64404966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64404966 is a wasteful number, since it uses less digits than its factorization.

64404966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734166.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 64404966 is about 8025.2704627321. The cubic root of 64404966 is about 400.8419059095.

The spelling of 64404966 in words is "sixty-four million, four hundred four thousand, nine hundred sixty-six".