672945139 has 2 divisors, whose sum is σ = 672945140. Its totient is φ = 672945138.

The previous prime is 672945137. The next prime is 672945151. The reversal of 672945139 is 931549276.

It is a happy number.

672945139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672945139 - 2¹ = 672945137 is a prime.

Together with 672945137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (672945137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336472569 + 336472570.

It is an arithmetic number, because the mean of its divisors is an integer number (336472570).

Almost surely, 2^672945139 is an apocalyptic number.

672945139 is a deficient number, since it is larger than the sum of its proper divisors (1).

672945139 is an equidigital number, since it uses as much as digits as its factorization.

672945139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 672945139 is about 25941.1861525259. The cubic root of 672945139 is about 876.3142759234.

The spelling of 672945139 in words is "six hundred seventy-two million, nine hundred forty-five thousand, one hundred thirty-nine".