672727922 has 4 divisors (see below), whose sum is σ = 1009091886. Its totient is φ = 336363960.

The previous prime is 672727919. The next prime is 672727981. The reversal of 672727922 is 229727276.

It is a happy number.

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., 424318801 + 248409121 = 20599^2 + 15761^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168181979 + ... + 168181982.

Almost surely, 2^672727922 is an apocalyptic number.

672727922 is a deficient number, since it is larger than the sum of its proper divisors (336363964).

672727922 is a wasteful number, since it uses less digits than its factorization.

672727922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336363963.

The product of its digits is 296352, while the sum is 44.

The square root of 672727922 is about 25936.9990939584. Note that the first 3 decimals coincide. The cubic root of 672727922 is about 876.2199785672.

The spelling of 672727922 in words is "six hundred seventy-two million, seven hundred twenty-seven thousand, nine hundred twenty-two".