672001907 has 2 divisors, whose sum is σ = 672001908. Its totient is φ = 672001906.

The previous prime is 672001903. The next prime is 672001933. The reversal of 672001907 is 709100276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672001907 - 2² = 672001903 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672001901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336000953 + 336000954.

It is an arithmetic number, because the mean of its divisors is an integer number (336000954).

Almost surely, 2^672001907 is an apocalyptic number.

672001907 is a deficient number, since it is larger than the sum of its proper divisors (1).

672001907 is an equidigital number, since it uses as much as digits as its factorization.

672001907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 672001907 is about 25922.9995756664. Note that the first 3 decimals coincide. The cubic root of 672001907 is about 875.9046565227.

The spelling of 672001907 in words is "six hundred seventy-two million, one thousand, nine hundred seven".