672471178 has 4 divisors (see below), whose sum is σ = 1008706770. Its totient is φ = 336235588.

The previous prime is 672471167. The next prime is 672471179. The reversal of 672471178 is 871174276.

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

It can be written as a sum of positive squares in only one way, i.e., 451265049 + 221206129 = 21243^2 + 14873^2 .

It is not an unprimeable number, because it can be changed into a prime (672471179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168117793 + ... + 168117796.

Almost surely, 2^672471178 is an apocalyptic number.

672471178 is a deficient number, since it is larger than the sum of its proper divisors (336235592).

672471178 is a wasteful number, since it uses less digits than its factorization.

672471178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336235591.

The product of its digits is 131712, while the sum is 43.

The square root of 672471178 is about 25932.0492441303. The cubic root of 672471178 is about 876.1084957325.

The spelling of 672471178 in words is "six hundred seventy-two million, four hundred seventy-one thousand, one hundred seventy-eight".