166487898 has 32 divisors (see below), whose sum is σ = 349623360. Its totient is φ = 52778880.

The previous prime is 166487897. The next prime is 166487903. The reversal of 166487898 is 898784661.

It is not an unprimeable number, because it can be changed into a prime (166487891) 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, 4518 + ... + 18798.

It is an arithmetic number, because the mean of its divisors is an integer number (10925730).

Almost surely, 2^166487898 is an apocalyptic number.

166487898 is an abundant number, since it is smaller than the sum of its proper divisors (183135462).

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

166487898 is a wasteful number, since it uses less digits than its factorization.

166487898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14382.

The product of its digits is 4644864, while the sum is 57.

The square root of 166487898 is about 12903.0189490677. The cubic root of 166487898 is about 550.1243773807.

The spelling of 166487898 in words is "one hundred sixty-six million, four hundred eighty-seven thousand, eight hundred ninety-eight".