166537668 has 24 divisors (see below), whose sum is σ = 423914400. Its totient is φ = 50465920.

The previous prime is 166537619. The next prime is 166537669. The reversal of 166537668 is 866735661.

166537668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166537669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630693 + ... + 630956.

It is an arithmetic number, because the mean of its divisors is an integer number (17663100).

Almost surely, 2^166537668 is an apocalyptic number.

It is an amenable number.

166537668 is an abundant number, since it is smaller than the sum of its proper divisors (257376732).

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

166537668 is a wasteful number, since it uses less digits than its factorization.

166537668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261667 (or 1261665 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 166537668 is about 12904.9474233722. The cubic root of 166537668 is about 550.1791900983.

The spelling of 166537668 in words is "one hundred sixty-six million, five hundred thirty-seven thousand, six hundred sixty-eight".