646003666622 has 8 divisors (see below), whose sum is σ = 975508893000. Its totient is φ = 320834035624.

The previous prime is 646003666613. The next prime is 646003666687. The reversal of 646003666622 is 226666300646.

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, 1083898472 + ... + 1083899067.

It is an arithmetic number, because the mean of its divisors is an integer number (121938611625).

Almost surely, 2^646003666622 is an apocalyptic number.

646003666622 is a deficient number, since it is larger than the sum of its proper divisors (329505226378).

646003666622 is a wasteful number, since it uses less digits than its factorization.

646003666622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167797690.

The product of its (nonzero) digits is 2239488, while the sum is 47.

The spelling of 646003666622 in words is "six hundred forty-six billion, three million, six hundred sixty-six thousand, six hundred twenty-two".