671293953 has 16 divisors (see below), whose sum is σ = 1084920000. Its totient is φ = 406844640.

The previous prime is 671293937. The next prime is 671293979. The reversal of 671293953 is 359392176.

It is not a de Polignac number, because 671293953 - 2⁴ = 671293937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 671293899 and 671293908.

It is not an unprimeable number, because it can be changed into a prime (671293993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1129828 + ... + 1130421.

It is an arithmetic number, because the mean of its divisors is an integer number (67807500).

Almost surely, 2^671293953 is an apocalyptic number.

It is an amenable number.

671293953 is a deficient number, since it is larger than the sum of its proper divisors (413626047).

671293953 is a wasteful number, since it uses less digits than its factorization.

671293953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260269 (or 2260263 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 671293953 is about 25909.3410375486. The cubic root of 671293953 is about 875.5969599300.

The spelling of 671293953 in words is "six hundred seventy-one million, two hundred ninety-three thousand, nine hundred fifty-three".