672990986 has 8 divisors (see below), whose sum is σ = 1013934240. Its totient is φ = 335012908.

The previous prime is 672990973. The next prime is 672991013. The reversal of 672990986 is 689099276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740726 + ... + 741633.

It is an arithmetic number, because the mean of its divisors is an integer number (126741780).

Almost surely, 2^672990986 is an apocalyptic number.

672990986 is a deficient number, since it is larger than the sum of its proper divisors (340943254).

672990986 is a wasteful number, since it uses less digits than its factorization.

672990986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482588.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 672990986 is about 25942.0698094813. The cubic root of 672990986 is about 876.3341762422.

The spelling of 672990986 in words is "six hundred seventy-two million, nine hundred ninety thousand, nine hundred eighty-six".