166690464 has 48 divisors (see below), whose sum is σ = 438232032. Its totient is φ = 55478528.

The previous prime is 166690429. The next prime is 166690471. The reversal of 166690464 is 464096661.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110902 + ... + 112394.

It is an arithmetic number, because the mean of its divisors is an integer number (9129834).

Almost surely, 2^166690464 is an apocalyptic number.

It is an amenable number.

166690464 is an abundant number, since it is smaller than the sum of its proper divisors (271541568).

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

166690464 is a wasteful number, since it uses less digits than its factorization.

166690464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 166690464 is about 12910.8661212174. The cubic root of 166690464 is about 550.3473992570.

The spelling of 166690464 in words is "one hundred sixty-six million, six hundred ninety thousand, four hundred sixty-four".