166787372 has 6 divisors (see below), whose sum is σ = 291877908. Its totient is φ = 83393684.

The previous prime is 166787363. The next prime is 166787399. The reversal of 166787372 is 273787661.

166787372 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20848418 + ... + 20848425.

It is an arithmetic number, because the mean of its divisors is an integer number (48646318).

Almost surely, 2^166787372 is an apocalyptic number.

It is an amenable number.

166787372 is a deficient number, since it is larger than the sum of its proper divisors (125090536).

166787372 is a wasteful number, since it uses less digits than its factorization.

166787372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41696847 (or 41696845 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The square root of 166787372 is about 12914.6185386948. The cubic root of 166787372 is about 550.4540294995.

The spelling of 166787372 in words is "one hundred sixty-six million, seven hundred eighty-seven thousand, three hundred seventy-two".