672801517 has 2 divisors, whose sum is σ = 672801518. Its totient is φ = 672801516.

The previous prime is 672801499. The next prime is 672801559. The reversal of 672801517 is 715108276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512297956 + 160503561 = 22634^2 + 12669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672801517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672801317) 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, 336400758 + 336400759.

It is an arithmetic number, because the mean of its divisors is an integer number (336400759).

Almost surely, 2^672801517 is an apocalyptic number.

It is an amenable number.

672801517 is a deficient number, since it is larger than the sum of its proper divisors (1).

672801517 is an equidigital number, since it uses as much as digits as its factorization.

672801517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 672801517 is about 25938.4177813528. The cubic root of 672801517 is about 876.2519296011.

The spelling of 672801517 in words is "six hundred seventy-two million, eight hundred one thousand, five hundred seventeen".