172736969 has 8 divisors (see below), whose sum is σ = 181258560. Its totient is φ = 164299696.

The previous prime is 172736959. The next prime is 172736989. The reversal of 172736969 is 969637271.

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 172736969 - 2⁴ = 172736953 is a prime.

It is a super-2 number, since 2×172736969² = 59676120918613922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172736909) 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, 16862 + ... + 25095.

It is an arithmetic number, because the mean of its divisors is an integer number (22657320).

Almost surely, 2^172736969 is an apocalyptic number.

It is an amenable number.

172736969 is a deficient number, since it is larger than the sum of its proper divisors (8521591).

172736969 is a wasteful number, since it uses less digits than its factorization.

172736969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42159.

The product of its digits is 857304, while the sum is 50.

The square root of 172736969 is about 13142.9436961436. The cubic root of 172736969 is about 556.9229286527.

It can be divided in two parts, 17273 and 6969, that added together give a palindrome (24242).

The spelling of 172736969 in words is "one hundred seventy-two million, seven hundred thirty-six thousand, nine hundred sixty-nine".