645010368 has 56 divisors (see below), whose sum is σ = 1712201808. Its totient is φ = 214296576.

The previous prime is 645010357. The next prime is 645010369. The reversal of 645010368 is 863010546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645010369) 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, 54730 + ... + 65462.

Almost surely, 2^645010368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 645010368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856100904).

645010368 is an abundant number, since it is smaller than the sum of its proper divisors (1067191440).

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

645010368 is a wasteful number, since it uses less digits than its factorization.

645010368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11061 (or 11051 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 645010368 is about 25397.0543173810. The cubic root of 645010368 is about 864.0168892446.

The spelling of 645010368 in words is "six hundred forty-five million, ten thousand, three hundred sixty-eight".