166772446 has 8 divisors (see below), whose sum is σ = 258784920. Its totient is φ = 80510808.

The previous prime is 166772413. The next prime is 166772449. The reversal of 166772446 is 644277661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166772449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437636 + ... + 1437751.

It is an arithmetic number, because the mean of its divisors is an integer number (32348115).

Almost surely, 2^166772446 is an apocalyptic number.

166772446 is a deficient number, since it is larger than the sum of its proper divisors (92012474).

166772446 is a wasteful number, since it uses less digits than its factorization.

166772446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875418.

The product of its digits is 338688, while the sum is 43.

The square root of 166772446 is about 12914.0406534903. The cubic root of 166772446 is about 550.4376087481.

The spelling of 166772446 in words is "one hundred sixty-six million, seven hundred seventy-two thousand, four hundred forty-six".