166980745 has 8 divisors (see below), whose sum is σ = 200652480. Its totient is φ = 133400880.

The previous prime is 166980719. The next prime is 166980757. The reversal of 166980745 is 547089661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166980745 - 2¹¹ = 166978697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166980695 and 166980704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18901 + ... + 26290.

It is an arithmetic number, because the mean of its divisors is an integer number (25081560).

Almost surely, 2^166980745 is an apocalyptic number.

It is an amenable number.

166980745 is a deficient number, since it is larger than the sum of its proper divisors (33671735).

166980745 is an equidigital number, since it uses as much as digits as its factorization.

166980745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45935.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 166980745 is about 12922.1029635273. The cubic root of 166980745 is about 550.6666791657. Note that the first 4 decimals are identical.

The spelling of 166980745 in words is "one hundred sixty-six million, nine hundred eighty thousand, seven hundred forty-five".