166634916 has 24 divisors (see below), whose sum is σ = 444360000. Its totient is φ = 47609952.

The previous prime is 166634911. The next prime is 166634917. The reversal of 166634916 is 619436661.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (166634911) 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, 991791 + ... + 991958.

It is an arithmetic number, because the mean of its divisors is an integer number (18515000).

Almost surely, 2^166634916 is an apocalyptic number.

It is an amenable number.

166634916 is an abundant number, since it is smaller than the sum of its proper divisors (277725084).

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

166634916 is a wasteful number, since it uses less digits than its factorization.

166634916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983763 (or 1983761 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 166634916 is about 12908.7147307546. The cubic root of 166634916 is about 550.2862597993.

The spelling of 166634916 in words is "one hundred sixty-six million, six hundred thirty-four thousand, nine hundred sixteen".