646117054 has 32 divisors (see below), whose sum is σ = 1087675776. Its totient is φ = 285321120.

The previous prime is 646117049. The next prime is 646117061. The reversal of 646117054 is 450711646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184629 + ... + 188095.

It is an arithmetic number, because the mean of its divisors is an integer number (33989868).

Almost surely, 2^646117054 is an apocalyptic number.

646117054 is a deficient number, since it is larger than the sum of its proper divisors (441558722).

646117054 is a wasteful number, since it uses less digits than its factorization.

646117054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 646117054 is about 25418.8326639915. The cubic root of 646117054 is about 864.5107567825.

The spelling of 646117054 in words is "six hundred forty-six million, one hundred seventeen thousand, fifty-four".