172745206 has 8 divisors (see below), whose sum is σ = 267476544. Its totient is φ = 83586360.

The previous prime is 172745197. The next prime is 172745219. The reversal of 172745206 is 602547271.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393045 + ... + 1393168.

It is an arithmetic number, because the mean of its divisors is an integer number (33434568).

Almost surely, 2^172745206 is an apocalyptic number.

172745206 is a deficient number, since it is larger than the sum of its proper divisors (94731338).

172745206 is a wasteful number, since it uses less digits than its factorization.

172745206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786246.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 172745206 is about 13143.2570544747. The cubic root of 172745206 is about 556.9317808424.

The spelling of 172745206 in words is "one hundred seventy-two million, seven hundred forty-five thousand, two hundred six".