646130835 has 96 divisors (see below), whose sum is σ = 1350355968. Its totient is φ = 279417600.

The previous prime is 646130819. The next prime is 646130839. The reversal of 646130835 is 538031646.

646130835 is a `hidden beast` number, since 6 + 4 + 613 + 0 + 8 + 35 = 666.

It is not a de Polignac number, because 646130835 - 2⁴ = 646130819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 646130835.

It is not an unprimeable number, because it can be changed into a prime (646130839) 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 95 ways as a sum of consecutive naturals, for example, 731304 + ... + 732186.

It is an arithmetic number, because the mean of its divisors is an integer number (14066208).

Almost surely, 2^646130835 is an apocalyptic number.

646130835 is an abundant number, since it is smaller than the sum of its proper divisors (704225133).

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

646130835 is a wasteful number, since it uses less digits than its factorization.

646130835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 646130835 is about 25419.1037410842. The cubic root of 646130835 is about 864.5169031084.

The spelling of 646130835 in words is "six hundred forty-six million, one hundred thirty thousand, eight hundred thirty-five".