645130107 has 12 divisors (see below), whose sum is σ = 934893960. Its totient is φ = 428683968.

The previous prime is 645130091. The next prime is 645130139. The reversal of 645130107 is 701031546.

645130107 is a `hidden beast` number, since 645 + 1 + 3 + 0 + 10 + 7 = 666.

It is not a de Polignac number, because 645130107 - 2⁴ = 645130091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645130147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113982 + ... + 119507.

It is an arithmetic number, because the mean of its divisors is an integer number (77907830).

Almost surely, 2^645130107 is an apocalyptic number.

645130107 is a deficient number, since it is larger than the sum of its proper divisors (289763853).

645130107 is a wasteful number, since it uses less digits than its factorization.

645130107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233802 (or 233799 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 645130107 is about 25399.4115483017. The cubic root of 645130107 is about 864.0703509781.

The spelling of 645130107 in words is "six hundred forty-five million, one hundred thirty thousand, one hundred seven".