167996556 has 144 divisors (see below), whose sum is σ = 550368000. Its totient is φ = 41959296.

The previous prime is 167996497. The next prime is 167996573. The reversal of 167996556 is 655699761.

167996556 is a `hidden beast` number, since 16 + 79 + 9 + 6 + 556 = 666.

It is a super-2 number, since 2×167996556² = 56445685655722272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60895 + ... + 63593.

It is an arithmetic number, because the mean of its divisors is an integer number (3822000).

Almost surely, 2^167996556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 167996556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275184000).

167996556 is an abundant number, since it is smaller than the sum of its proper divisors (382371444).

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

167996556 is a wasteful number, since it uses less digits than its factorization.

167996556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748 (or 2743 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The square root of 167996556 is about 12961.3485409505. The cubic root of 167996556 is about 551.7810647208.

The spelling of 167996556 in words is "one hundred sixty-seven million, nine hundred ninety-six thousand, five hundred fifty-six".