672870965 has 48 divisors (see below), whose sum is σ = 956261376. Its totient is φ = 452275200.

The previous prime is 672870907. The next prime is 672871007. The reversal of 672870965 is 569078276.

It is a de Polignac number, because none of the positive numbers 2^k-672870965 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 444560 + ... + 446070.

It is an arithmetic number, because the mean of its divisors is an integer number (19922112).

Almost surely, 2^672870965 is an apocalyptic number.

672870965 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

672870965 is a deficient number, since it is larger than the sum of its proper divisors (283390411).

672870965 is a wasteful number, since it uses less digits than its factorization.

672870965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 672870965 is about 25939.7564560657. The cubic root of 672870965 is about 876.2820780915.

The spelling of 672870965 in words is "six hundred seventy-two million, eight hundred seventy thousand, nine hundred sixty-five".