172426667 has 8 divisors (see below), whose sum is σ = 197228256. Its totient is φ = 147667392.

The previous prime is 172426651. The next prime is 172426679. The reversal of 172426667 is 766624271.

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

It is a cyclic number.

It is not a de Polignac number, because 172426667 - 2⁴ = 172426651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172426627) 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 7 ways as a sum of consecutive naturals, for example, 1298 + ... + 18615.

It is an arithmetic number, because the mean of its divisors is an integer number (24653532).

Almost surely, 2^172426667 is an apocalyptic number.

172426667 is a deficient number, since it is larger than the sum of its proper divisors (24801589).

172426667 is a wasteful number, since it uses less digits than its factorization.

172426667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21157.

The product of its digits is 169344, while the sum is 41.

The square root of 172426667 is about 13131.1335001972. The cubic root of 172426667 is about 556.5892462080.

The spelling of 172426667 in words is "one hundred seventy-two million, four hundred twenty-six thousand, six hundred sixty-seven".