172470866 has 8 divisors (see below), whose sum is σ = 272322480. Its totient is φ = 81696708.

The previous prime is 172470863. The next prime is 172470869. The reversal of 172470866 is 668074271.

It is an interprime number because it is at equal distance from previous prime (172470863) and next prime (172470869).

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

It is not an unprimeable number, because it can be changed into a prime (172470863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2269316 + ... + 2269391.

It is an arithmetic number, because the mean of its divisors is an integer number (34040310).

Almost surely, 2^172470866 is an apocalyptic number.

172470866 is a deficient number, since it is larger than the sum of its proper divisors (99851614).

172470866 is a wasteful number, since it uses less digits than its factorization.

172470866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538728.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 172470866 is about 13132.8163773046. The cubic root of 172470866 is about 556.6367999243.

The spelling of 172470866 in words is "one hundred seventy-two million, four hundred seventy thousand, eight hundred sixty-six".