64664910 has 48 divisors (see below), whose sum is σ = 168816960. Its totient is φ = 17173440.

The previous prime is 64664909. The next prime is 64664939. The reversal of 64664910 is 1946646.

64664910 is a `hidden beast` number, since 6 + 4 + 6 + 649 + 1 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22875 + ... + 25545.

It is an arithmetic number, because the mean of its divisors is an integer number (3517020).

Almost surely, 2^64664910 is an apocalyptic number.

64664910 is an abundant number, since it is smaller than the sum of its proper divisors (104152050).

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

64664910 is a wasteful number, since it uses less digits than its factorization.

64664910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953 (or 2950 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 64664910 is about 8041.4494962040. The cubic root of 64664910 is about 401.3804595149.

It can be divided in two parts, 646 and 64910, that added together give a palindrome (65556).

The spelling of 64664910 in words is "sixty-four million, six hundred sixty-four thousand, nine hundred ten".