166798556 has 12 divisors (see below), whose sum is σ = 292023480. Its totient is φ = 83363280.

The previous prime is 166798547. The next prime is 166798589. The reversal of 166798556 is 655897661.

166798556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166798498 and 166798507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3290 + ... + 18558.

It is an arithmetic number, because the mean of its divisors is an integer number (24335290).

Almost surely, 2^166798556 is an apocalyptic number.

It is an amenable number.

166798556 is a deficient number, since it is larger than the sum of its proper divisors (125224924).

166798556 is a wasteful number, since it uses less digits than its factorization.

166798556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18004 (or 18002 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 53.

The square root of 166798556 is about 12915.0515291268. The cubic root of 166798556 is about 550.4663328696.

The spelling of 166798556 in words is "one hundred sixty-six million, seven hundred ninety-eight thousand, five hundred fifty-six".