640075150 has 48 divisors (see below), whose sum is σ = 1398691728. Its totient is φ = 214848000.

The previous prime is 640075147. The next prime is 640075151. The reversal of 640075150 is 51570046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640075151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37611 + ... + 51910.

It is an arithmetic number, because the mean of its divisors is an integer number (29139411).

Almost surely, 2^640075150 is an apocalyptic number.

640075150 is an abundant number, since it is smaller than the sum of its proper divisors (758616578).

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

640075150 is a wasteful number, since it uses less digits than its factorization.

640075150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89557 (or 89552 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 640075150 is about 25299.7065200369. The cubic root of 640075150 is about 861.8076050607.

The spelling of 640075150 in words is "six hundred forty million, seventy-five thousand, one hundred fifty".