646965552 has 40 divisors (see below), whose sum is σ = 1678017600. Its totient is φ = 214792000.

The previous prime is 646965509. The next prime is 646965563. The reversal of 646965552 is 255569646.

646965552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14802 + ... + 38897.

It is an arithmetic number, because the mean of its divisors is an integer number (41950440).

Almost surely, 2^646965552 is an apocalyptic number.

It is an amenable number.

646965552 is an abundant number, since it is smaller than the sum of its proper divisors (1031052048).

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

646965552 is a wasteful number, since it uses less digits than its factorization.

646965552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53961 (or 53955 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 48.

The square root of 646965552 is about 25435.5175296277. The cubic root of 646965552 is about 864.8890240423.

The spelling of 646965552 in words is "six hundred forty-six million, nine hundred sixty-five thousand, five hundred fifty-two".