646283504 has 10 divisors (see below), whose sum is σ = 1252174320. Its totient is φ = 323141744.

The previous prime is 646283501. The next prime is 646283513. The reversal of 646283504 is 405382646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646283501) 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 as a sum of consecutive naturals, namely, 20196344 + ... + 20196375.

It is an arithmetic number, because the mean of its divisors is an integer number (125217432).

Almost surely, 2^646283504 is an apocalyptic number.

It is an amenable number.

646283504 is a deficient number, since it is larger than the sum of its proper divisors (605890816).

646283504 is a wasteful number, since it uses less digits than its factorization.

646283504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40392727 (or 40392721 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 646283504 is about 25422.1066003587. The cubic root of 646283504 is about 864.5849876356.

The spelling of 646283504 in words is "six hundred forty-six million, two hundred eighty-three thousand, five hundred four".