64646466 has 8 divisors (see below), whose sum is σ = 129292944. Its totient is φ = 21548820.

The previous prime is 64646453. The next prime is 64646473. The reversal of 64646466 is 66464646.

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

64646466 is an admirable 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, 5387200 + ... + 5387211.

It is an arithmetic number, because the mean of its divisors is an integer number (16161618).

Almost surely, 2^64646466 is an apocalyptic number.

64646466 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.

64646466 is a wasteful number, since it uses less digits than its factorization.

64646466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774416.

The product of its digits is 497664, while the sum is 42.

The square root of 64646466 is about 8040.3026062456. The cubic root of 64646466 is about 401.3422947402.

It can be divided in two parts, 646464 and 66, that multiplied together give a palindrome (42666624).

The spelling of 64646466 in words is "sixty-four million, six hundred forty-six thousand, four hundred sixty-six".