646875010 has 16 divisors (see below), whose sum is σ = 1169251200. Its totient is φ = 257666416.

The previous prime is 646874983. The next prime is 646875013. The reversal of 646875010 is 10578646.

It is not an unprimeable number, because it can be changed into a prime (646875013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132940 + ... + 137719.

It is an arithmetic number, because the mean of its divisors is an integer number (73078200).

Almost surely, 2^646875010 is an apocalyptic number.

646875010 is a deficient number, since it is larger than the sum of its proper divisors (522376190).

646875010 is a wasteful number, since it uses less digits than its factorization.

646875010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270905.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 646875010 is about 25433.7376333090. The cubic root of 646875010 is about 864.8486754565.

The spelling of 646875010 in words is "six hundred forty-six million, eight hundred seventy-five thousand, ten".