673164261 has 72 divisors (see below), whose sum is σ = 1229941440. Its totient is φ = 347276160.

The previous prime is 673164241. The next prime is 673164301. The reversal of 673164261 is 162461376.

It is a happy number.

673164261 is a `hidden beast` number, since 6 + 7 + 3 + 1 + 642 + 6 + 1 = 666.

It is not a de Polignac number, because 673164261 - 2⁵ = 673164229 is a prime.

It is a super-2 number, since 2×673164261² = 906300244575352242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673164241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1775970 + ... + 1776348.

It is an arithmetic number, because the mean of its divisors is an integer number (17082520).

Almost surely, 2^673164261 is an apocalyptic number.

It is an amenable number.

673164261 is a deficient number, since it is larger than the sum of its proper divisors (556777179).

673164261 is a wasteful number, since it uses less digits than its factorization.

673164261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 633 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 673164261 is about 25945.4092471096. The cubic root of 673164261 is about 876.4093797131.

The spelling of 673164261 in words is "six hundred seventy-three million, one hundred sixty-four thousand, two hundred sixty-one".