166725660 has 48 divisors (see below), whose sum is σ = 467712000. Its totient is φ = 44376384.

The previous prime is 166725653. The next prime is 166725661. The reversal of 166725660 is 66527661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166725661) 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, 33621 + ... + 38259.

It is an arithmetic number, because the mean of its divisors is an integer number (9744000).

Almost surely, 2^166725660 is an apocalyptic number.

166725660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166725660 is an abundant number, since it is smaller than the sum of its proper divisors (300986340).

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

166725660 is a wasteful number, since it uses less digits than its factorization.

166725660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250 (or 5248 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 166725660 is about 12912.2290871871. The cubic root of 166725660 is about 550.3861310546.

The spelling of 166725660 in words is "one hundred sixty-six million, seven hundred twenty-five thousand, six hundred sixty".