166030998 has 64 divisors (see below), whose sum is σ = 391564800. Its totient is φ = 45948672.

The previous prime is 166030979. The next prime is 166031011. The reversal of 166030998 is 899030661.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268786 + ... + 269402.

It is an arithmetic number, because the mean of its divisors is an integer number (6118200).

Almost surely, 2^166030998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166030998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195782400).

166030998 is an abundant number, since it is smaller than the sum of its proper divisors (225533802).

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

166030998 is a wasteful number, since it uses less digits than its factorization.

166030998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 166030998 is about 12885.3016262717. The cubic root of 166030998 is about 549.6206728789.

The spelling of 166030998 in words is "one hundred sixty-six million, thirty thousand, nine hundred ninety-eight".