672002018 has 4 divisors (see below), whose sum is σ = 1008003030. Its totient is φ = 336001008.

The previous prime is 672002003. The next prime is 672002039. The reversal of 672002018 is 810200276.

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., 586753729 + 85248289 = 24223^2 + 9233^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168000503 + ... + 168000506.

Almost surely, 2^672002018 is an apocalyptic number.

672002018 is a deficient number, since it is larger than the sum of its proper divisors (336001012).

672002018 is a wasteful number, since it uses less digits than its factorization.

672002018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336001011.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 672002018 is about 25923.0017166222. The cubic root of 672002018 is about 875.9047047495.

The spelling of 672002018 in words is "six hundred seventy-two million, two thousand, eighteen".