672690923 has 2 divisors, whose sum is σ = 672690924. Its totient is φ = 672690922.

The previous prime is 672690911. The next prime is 672690929. The reversal of 672690923 is 329096276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672690923 - 2¹⁴ = 672674539 is a prime.

It is not a weakly prime, because it can be changed into another prime (672690929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336345461 + 336345462.

It is an arithmetic number, because the mean of its divisors is an integer number (336345462).

Almost surely, 2^672690923 is an apocalyptic number.

672690923 is a deficient number, since it is larger than the sum of its proper divisors (1).

672690923 is an equidigital number, since it uses as much as digits as its factorization.

672690923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 672690923 is about 25936.2858366421. The cubic root of 672690923 is about 876.2039146894.

The spelling of 672690923 in words is "six hundred seventy-two million, six hundred ninety thousand, nine hundred twenty-three".