672876657749 has 2 divisors, whose sum is σ = 672876657750. Its totient is φ = 672876657748.

The previous prime is 672876657721. The next prime is 672876657767. The reversal of 672876657749 is 947756678276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 580007142724 + 92869515025 = 761582^2 + 304745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672876657749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672876657769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336438328874 + 336438328875.

It is an arithmetic number, because the mean of its divisors is an integer number (336438328875).

Almost surely, 2^672876657749 is an apocalyptic number.

It is an amenable number.

672876657749 is a deficient number, since it is larger than the sum of its proper divisors (1).

672876657749 is an equidigital number, since it uses as much as digits as its factorization.

672876657749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1493614080, while the sum is 74.

The spelling of 672876657749 in words is "six hundred seventy-two billion, eight hundred seventy-six million, six hundred fifty-seven thousand, seven hundred forty-nine".