646590454476 has 192 divisors, whose sum is σ = 1601849475072. Its totient is φ = 202718880000.

The previous prime is 646590454457. The next prime is 646590454481. The reversal of 646590454476 is 674454095646.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1316884591 + ... + 1316885081.

It is an arithmetic number, because the mean of its divisors is an integer number (8342966016).

Almost surely, 2^646590454476 is an apocalyptic number.

It is an amenable number.

646590454476 is an abundant number, since it is smaller than the sum of its proper divisors (955259020596).

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

646590454476 is a wasteful number, since it uses less digits than its factorization.

646590454476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 60.

The spelling of 646590454476 in words is "six hundred forty-six billion, five hundred ninety million, four hundred fifty-four thousand, four hundred seventy-six".