672790871 has 4 divisors (see below), whose sum is σ = 702042672. Its totient is φ = 643539072.

The previous prime is 672790847. The next prime is 672790873. The reversal of 672790871 is 178097276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672790871 - 2¹⁰ = 672789847 is a prime.

It is a super-2 number, since 2×672790871² = 905295112201877282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672790873) 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, 14625866 + ... + 14625911.

It is an arithmetic number, because the mean of its divisors is an integer number (175510668).

Almost surely, 2^672790871 is an apocalyptic number.

672790871 is a deficient number, since it is larger than the sum of its proper divisors (29251801).

672790871 is a wasteful number, since it uses less digits than its factorization.

672790871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29251800.

The product of its (nonzero) digits is 296352, while the sum is 47.

The square root of 672790871 is about 25938.2125637061. The cubic root of 672790871 is about 876.2473078184.

The spelling of 672790871 in words is "six hundred seventy-two million, seven hundred ninety thousand, eight hundred seventy-one".