166910406 has 16 divisors (see below), whose sum is σ = 359499504. Its totient is φ = 51357024.

The previous prime is 166910377. The next prime is 166910407. The reversal of 166910406 is 604019661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166910407) 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, 1069861 + ... + 1070016.

It is an arithmetic number, because the mean of its divisors is an integer number (22468719).

Almost surely, 2^166910406 is an apocalyptic number.

166910406 is an abundant number, since it is smaller than the sum of its proper divisors (192589098).

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

166910406 is a wasteful number, since it uses less digits than its factorization.

166910406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139895.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 166910406 is about 12919.3810223246. The cubic root of 166910406 is about 550.5893473282.

The spelling of 166910406 in words is "one hundred sixty-six million, nine hundred ten thousand, four hundred six".