672171269 has 32 divisors (see below), whose sum is σ = 868224000. Its totient is φ = 515758320.

The previous prime is 672171229. The next prime is 672171307. The reversal of 672171269 is 962171276.

It is not a de Polignac number, because 672171269 - 2¹² = 672167173 is a prime.

It is a super-2 number, since 2×672171269² = 903628429738140722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672171209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251462 + ... + 254120.

It is an arithmetic number, because the mean of its divisors is an integer number (27132000).

Almost surely, 2^672171269 is an apocalyptic number.

It is an amenable number.

672171269 is a deficient number, since it is larger than the sum of its proper divisors (196052731).

672171269 is a wasteful number, since it uses less digits than its factorization.

672171269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2744 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 672171269 is about 25926.2660057325. The cubic root of 672171269 is about 875.9782339448.

It can be divided in two parts, 67217 and 1269, that added together give a palindrome (68486).

The spelling of 672171269 in words is "six hundred seventy-two million, one hundred seventy-one thousand, two hundred sixty-nine".