645163230 has 32 divisors (see below), whose sum is σ = 1574640000. Its totient is φ = 169127072.

The previous prime is 645163229. The next prime is 645163231. The reversal of 645163230 is 32361546.

It is an interprime number because it is at equal distance from previous prime (645163229) and next prime (645163231).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645163231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180480 + ... + 184019.

It is an arithmetic number, because the mean of its divisors is an integer number (49207500).

Almost surely, 2^645163230 is an apocalyptic number.

645163230 is an abundant number, since it is smaller than the sum of its proper divisors (929476770).

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

645163230 is a wasteful number, since it uses less digits than its factorization.

645163230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364568.

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

The square root of 645163230 is about 25400.0635825976. The cubic root of 645163230 is about 864.0851387509.

The spelling of 645163230 in words is "six hundred forty-five million, one hundred sixty-three thousand, two hundred thirty".