672643698 has 8 divisors (see below), whose sum is σ = 1345287408. Its totient is φ = 224214564.

The previous prime is 672643691. The next prime is 672643721. The reversal of 672643698 is 896346276.

It is a happy number.

672643698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

672643698 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 672643698.

It is not an unprimeable number, because it can be changed into a prime (672643691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56053636 + ... + 56053647.

It is an arithmetic number, because the mean of its divisors is an integer number (168160926).

Almost surely, 2^672643698 is an apocalyptic number.

672643698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672643698 is a wasteful number, since it uses less digits than its factorization.

672643698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112107288.

The product of its digits is 2612736, while the sum is 51.

The square root of 672643698 is about 25935.3754166004. The cubic root of 672643698 is about 876.1834101274.

The spelling of 672643698 in words is "six hundred seventy-two million, six hundred forty-three thousand, six hundred ninety-eight".