166799952 has 120 divisors (see below), whose sum is σ = 526424640. Its totient is φ = 50529600.

The previous prime is 166799929. The next prime is 166799953. The reversal of 166799952 is 259997661.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166799953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50677 + ... + 53867.

It is an arithmetic number, because the mean of its divisors is an integer number (4386872).

Almost surely, 2^166799952 is an apocalyptic number.

166799952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166799952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263212320).

166799952 is an abundant number, since it is smaller than the sum of its proper divisors (359624688).

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

166799952 is a wasteful number, since it uses less digits than its factorization.

166799952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230 (or 3207 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 166799952 is about 12915.1055744814. The cubic root of 166799952 is about 550.4678685520.

It can be divided in two parts, 1667999 and 52, that added together give a triangular number (1668051 = T₁₈₂₆).

The spelling of 166799952 in words is "one hundred sixty-six million, seven hundred ninety-nine thousand, nine hundred fifty-two".