166870946 has 16 divisors (see below), whose sum is σ = 289124640. Its totient is φ = 71388480.

The previous prime is 166870933. The next prime is 166870961. The reversal of 166870946 is 649078661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 166870946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222716 + ... + 223463.

It is an arithmetic number, because the mean of its divisors is an integer number (18070290).

Almost surely, 2^166870946 is an apocalyptic number.

166870946 is a deficient number, since it is larger than the sum of its proper divisors (122253694).

166870946 is a wasteful number, since it uses less digits than its factorization.

166870946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446209.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 166870946 is about 12917.8537691058. The cubic root of 166870946 is about 550.5459548509.

The spelling of 166870946 in words is "one hundred sixty-six million, eight hundred seventy thousand, nine hundred forty-six".