671969259 has 24 divisors (see below), whose sum is σ = 1049931792. Its totient is φ = 411681600.

The previous prime is 671969239. The next prime is 671969279. The reversal of 671969259 is 952969176.

It is an interprime number because it is at equal distance from previous prime (671969239) and next prime (671969279).

It is not a de Polignac number, because 671969259 - 2⁸ = 671969003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671969239) 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 23 ways as a sum of consecutive naturals, for example, 13909 + ... + 39209.

It is an arithmetic number, because the mean of its divisors is an integer number (43747158).

Almost surely, 2^671969259 is an apocalyptic number.

671969259 is a deficient number, since it is larger than the sum of its proper divisors (377962533).

671969259 is a wasteful number, since it uses less digits than its factorization.

671969259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25547 (or 25544 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 671969259 is about 25922.3698569402. The cubic root of 671969259 is about 875.8904715440.

The spelling of 671969259 in words is "six hundred seventy-one million, nine hundred sixty-nine thousand, two hundred fifty-nine".