646010512 has 30 divisors (see below), whose sum is σ = 1455997398. Its totient is φ = 276861312.

The previous prime is 646010501. The next prime is 646010513. The reversal of 646010512 is 215010646.

It can be written as a sum of positive squares in only one way, i.e., 542703616 + 103306896 = 23296^2 + 10164^2 .

It is a super-2 number, since 2×646010512² = 834659163229004288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (646010513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411213 + ... + 412780.

Almost surely, 2^646010512 is an apocalyptic number.

It is an amenable number.

646010512 is an abundant number, since it is smaller than the sum of its proper divisors (809986886).

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

646010512 is a wasteful number, since it uses less digits than its factorization.

646010512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824015 (or 824002 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 646010512 is about 25416.7368479905. The cubic root of 646010512 is about 864.4632361010.

The spelling of 646010512 in words is "six hundred forty-six million, ten thousand, five hundred twelve".