166890460 has 36 divisors (see below), whose sum is σ = 385232904. Its totient is φ = 60686560.

The previous prime is 166890457. The next prime is 166890487. The reversal of 166890460 is 64098661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32062 + ... + 36901.

It is an arithmetic number, because the mean of its divisors is an integer number (10700914).

Almost surely, 2^166890460 is an apocalyptic number.

166890460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166890460 is an abundant number, since it is smaller than the sum of its proper divisors (218342444).

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

166890460 is a wasteful number, since it uses less digits than its factorization.

166890460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68994 (or 68981 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 166890460 is about 12918.6090582539. The cubic root of 166890460 is about 550.5674144185.

The spelling of 166890460 in words is "one hundred sixty-six million, eight hundred ninety thousand, four hundred sixty".