646463001 has 32 divisors (see below), whose sum is σ = 927832320. Its totient is φ = 399320064.

The previous prime is 646462991. The next prime is 646463017. The reversal of 646463001 is 100364646.

It is not a de Polignac number, because 646463001 - 2⁵ = 646462969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 646463001.

It is not an unprimeable number, because it can be changed into a prime (646463021) 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 31 ways as a sum of consecutive naturals, for example, 798685 + ... + 799493.

It is an arithmetic number, because the mean of its divisors is an integer number (28994760).

Almost surely, 2^646463001 is an apocalyptic number.

It is an amenable number.

646463001 is a deficient number, since it is larger than the sum of its proper divisors (281369319).

646463001 is a wasteful number, since it uses less digits than its factorization.

646463001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 646463001 is about 25425.6366881933. The cubic root of 646463001 is about 864.6650227107.

The spelling of 646463001 in words is "six hundred forty-six million, four hundred sixty-three thousand, one".