166465885 has 8 divisors (see below), whose sum is σ = 201332736. Its totient is φ = 132123600.

The previous prime is 166465861. The next prime is 166465891. The reversal of 166465885 is 588564661.

166465885 = T₃₈₃ + T₃₈₄ + ... + T₁₀₁₇.

166465885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166465885 - 2⁷ = 166465757 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 130441 + ... + 131710.

It is an arithmetic number, because the mean of its divisors is an integer number (25166592).

Almost surely, 2^166465885 is an apocalyptic number.

It is an amenable number.

166465885 is a deficient number, since it is larger than the sum of its proper divisors (34866851).

166465885 is a wasteful number, since it uses less digits than its factorization.

166465885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262283.

The product of its digits is 1382400, while the sum is 49.

The square root of 166465885 is about 12902.1659034443. The cubic root of 166465885 is about 550.1001305299.

The spelling of 166465885 in words is "one hundred sixty-six million, four hundred sixty-five thousand, eight hundred eighty-five".