166957620 has 48 divisors (see below), whose sum is σ = 468117888. Its totient is φ = 44461440.

The previous prime is 166957619. The next prime is 166957627. The reversal of 166957620 is 26759661.

166957620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166957627) 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, 58425 + ... + 61215.

It is an arithmetic number, because the mean of its divisors is an integer number (9752456).

Almost surely, 2^166957620 is an apocalyptic number.

166957620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166957620 is an abundant number, since it is smaller than the sum of its proper divisors (301160268).

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

166957620 is a wasteful number, since it uses less digits than its factorization.

166957620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800 (or 3798 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 166957620 is about 12921.2081478475. The cubic root of 166957620 is about 550.6412575622.

The spelling of 166957620 in words is "one hundred sixty-six million, nine hundred fifty-seven thousand, six hundred twenty".