646103532 has 12 divisors (see below), whose sum is σ = 1507574936. Its totient is φ = 215367840.

The previous prime is 646103489. The next prime is 646103537. The reversal of 646103532 is 235301646.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 646103532.

It is not an unprimeable number, because it can be changed into a prime (646103537) 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 3 ways as a sum of consecutive naturals, for example, 26920969 + ... + 26920992.

Almost surely, 2^646103532 is an apocalyptic number.

It is an amenable number.

646103532 is an abundant number, since it is smaller than the sum of its proper divisors (861471404).

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

646103532 is a wasteful number, since it uses less digits than its factorization.

646103532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53841968 (or 53841966 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 646103532 is about 25418.5666787095. The cubic root of 646103532 is about 864.5047258856.

The spelling of 646103532 in words is "six hundred forty-six million, one hundred three thousand, five hundred thirty-two".