672642278 has 32 divisors (see below), whose sum is σ = 1298515968. Its totient is φ = 253612800.

The previous prime is 672642263. The next prime is 672642319. The reversal of 672642278 is 872246276.

It is a happy number.

672642278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65675 + ... + 75222.

It is an arithmetic number, because the mean of its divisors is an integer number (40578624).

Almost surely, 2^672642278 is an apocalyptic number.

672642278 is a deficient number, since it is larger than the sum of its proper divisors (625873690).

672642278 is a wasteful number, since it uses less digits than its factorization.

672642278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140948.

The product of its digits is 451584, while the sum is 44.

The square root of 672642278 is about 25935.3480408496. The cubic root of 672642278 is about 876.1827935646.

The spelling of 672642278 in words is "six hundred seventy-two million, six hundred forty-two thousand, two hundred seventy-eight".