672997943 has 2 divisors, whose sum is σ = 672997944. Its totient is φ = 672997942.

The previous prime is 672997907. The next prime is 672997967. The reversal of 672997943 is 349799276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672997943 - 2¹² = 672993847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672997243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336498971 + 336498972.

It is an arithmetic number, because the mean of its divisors is an integer number (336498972).

Almost surely, 2^672997943 is an apocalyptic number.

672997943 is a deficient number, since it is larger than the sum of its proper divisors (1).

672997943 is an equidigital number, since it uses as much as digits as its factorization.

672997943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 56.

The square root of 672997943 is about 25942.2038963539. The cubic root of 672997943 is about 876.3371959140.

The spelling of 672997943 in words is "six hundred seventy-two million, nine hundred ninety-seven thousand, nine hundred forty-three".