166609622 has 16 divisors (see below), whose sum is σ = 264866112. Its totient is φ = 78330240.

The previous prime is 166609603. The next prime is 166609627. The reversal of 166609622 is 226906661.

It is a super-2 number, since 2×166609622² = 55517532285965768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166609627) 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, 53603 + ... + 56625.

It is an arithmetic number, because the mean of its divisors is an integer number (16554132).

Almost surely, 2^166609622 is an apocalyptic number.

166609622 is a deficient number, since it is larger than the sum of its proper divisors (98256490).

166609622 is a wasteful number, since it uses less digits than its factorization.

166609622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 166609622 is about 12907.7349678400. The cubic root of 166609622 is about 550.2584152048.

The spelling of 166609622 in words is "one hundred sixty-six million, six hundred nine thousand, six hundred twenty-two".