646002992 has 20 divisors (see below), whose sum is σ = 1325256696. Its totient is φ = 304001280.

The previous prime is 646002989. The next prime is 646003003. The reversal of 646002992 is 299200646.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1187234 + ... + 1187777.

Almost surely, 2^646002992 is an apocalyptic number.

It is an amenable number.

646002992 is an abundant number, since it is smaller than the sum of its proper divisors (679253704).

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

646002992 is a wasteful number, since it uses less digits than its factorization.

646002992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375036 (or 2375030 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 646002992 is about 25416.5889135423. The cubic root of 646002992 is about 864.4598817754.

The spelling of 646002992 in words is "six hundred forty-six million, two thousand, nine hundred ninety-two".