660125406 has 24 divisors (see below), whose sum is σ = 1340304840. Its totient is φ = 216748752.

The previous prime is 660125363. The next prime is 660125407. The reversal of 660125406 is 604521066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660125407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14680 + ... + 39188.

It is an arithmetic number, because the mean of its divisors is an integer number (55846035).

Almost surely, 2^660125406 is an apocalyptic number.

660125406 is an abundant number, since it is smaller than the sum of its proper divisors (680179434).

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

660125406 is a wasteful number, since it uses less digits than its factorization.

660125406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24648 (or 24581 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 660125406 is about 25692.9057523667. The cubic root of 660125406 is about 870.7139099855.

The spelling of 660125406 in words is "six hundred sixty million, one hundred twenty-five thousand, four hundred six".