172066067 has 4 divisors (see below), whose sum is σ = 172235616. Its totient is φ = 171896520.

The previous prime is 172066051. The next prime is 172066087. The reversal of 172066067 is 760660271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172066067 - 2⁴ = 172066051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172066087) 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, 83243 + ... + 85284.

It is an arithmetic number, because the mean of its divisors is an integer number (43058904).

Almost surely, 2^172066067 is an apocalyptic number.

172066067 is a deficient number, since it is larger than the sum of its proper divisors (169549).

172066067 is a wasteful number, since it uses less digits than its factorization.

172066067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169548.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 172066067 is about 13117.3955875395. The cubic root of 172066067 is about 556.2009726263.

The spelling of 172066067 in words is "one hundred seventy-two million, sixty-six thousand, sixty-seven".