64606646 has 8 divisors (see below), whose sum is σ = 104364624. Its totient is φ = 29818440.

The previous prime is 64606639. The next prime is 64606673. The reversal of 64606646 is 64660646.

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

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, 1242410 + ... + 1242461.

It is an arithmetic number, because the mean of its divisors is an integer number (13045578).

Almost surely, 2^64606646 is an apocalyptic number.

64606646 is a deficient number, since it is larger than the sum of its proper divisors (39757978).

64606646 is a wasteful number, since it uses less digits than its factorization.

64606646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484886.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 64606646 is about 8037.8259498449. The cubic root of 64606646 is about 401.2598734643.

The spelling of 64606646 in words is "sixty-four million, six hundred six thousand, six hundred forty-six".