166655442 has 32 divisors (see below), whose sum is σ = 347443200. Its totient is φ = 53231760.

The previous prime is 166655429. The next prime is 166655443. The reversal of 166655442 is 244556661.

It is a self number, because there is not a number n which added to its sum of digits gives 166655442.

It is not an unprimeable number, because it can be changed into a prime (166655443) 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, 14809 + ... + 23507.

It is an arithmetic number, because the mean of its divisors is an integer number (10857600).

Almost surely, 2^166655442 is an apocalyptic number.

166655442 is an abundant number, since it is smaller than the sum of its proper divisors (180787758).

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

166655442 is a wasteful number, since it uses less digits than its factorization.

166655442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8838.

The product of its digits is 172800, while the sum is 39.

The square root of 166655442 is about 12909.5097505676. The cubic root of 166655442 is about 550.3088535275.

The spelling of 166655442 in words is "one hundred sixty-six million, six hundred fifty-five thousand, four hundred forty-two".