645000486 has 32 divisors (see below), whose sum is σ = 1462352640. Its totient is φ = 188015904.

The previous prime is 645000463. The next prime is 645000487. The reversal of 645000486 is 684000546.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645000487) 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, 216130 + ... + 219093.

It is an arithmetic number, because the mean of its divisors is an integer number (45698520).

Almost surely, 2^645000486 is an apocalyptic number.

645000486 is an abundant number, since it is smaller than the sum of its proper divisors (817352154).

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

645000486 is a wasteful number, since it uses less digits than its factorization.

645000486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435260.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 645000486 is about 25396.8597665144. The cubic root of 645000486 is about 864.0124767788.

The spelling of 645000486 in words is "six hundred forty-five million, four hundred eighty-six", and thus it is an aban number.