172240669 has 8 divisors (see below), whose sum is σ = 174910400. Its totient is φ = 169589376.

The previous prime is 172240609. The next prime is 172240693. The reversal of 172240669 is 966042271.

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 172240669 - 2¹¹ = 172238621 is a prime.

It is a super-2 number, since 2×172240669² = 59333696115135122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172240609) 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, 14842 + ... + 23764.

It is an arithmetic number, because the mean of its divisors is an integer number (21863800).

Almost surely, 2^172240669 is an apocalyptic number.

It is an amenable number.

172240669 is a deficient number, since it is larger than the sum of its proper divisors (2669731).

172240669 is an equidigital number, since it uses as much as digits as its factorization.

172240669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 172240669 is about 13124.0492608036. The cubic root of 172240669 is about 556.3890418062.

The spelling of 172240669 in words is "one hundred seventy-two million, two hundred forty thousand, six hundred sixty-nine".