645430060 has 24 divisors (see below), whose sum is σ = 1478622096. Its totient is φ = 234701760.

The previous prime is 645430039. The next prime is 645430067. The reversal of 645430060 is 60034546.

It is not an unprimeable number, because it can be changed into a prime (645430067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466667 + ... + 1467106.

It is an arithmetic number, because the mean of its divisors is an integer number (61609254).

Almost surely, 2^645430060 is an apocalyptic number.

It is an amenable number.

645430060 is an abundant number, since it is smaller than the sum of its proper divisors (833192036).

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

645430060 is a wasteful number, since it uses less digits than its factorization.

645430060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933793 (or 2933791 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 645430060 is about 25405.3155855226. The cubic root of 645430060 is about 864.2042466233.

The spelling of 645430060 in words is "six hundred forty-five million, four hundred thirty thousand, sixty".