687073351 has 2 divisors, whose sum is σ = 687073352. Its totient is φ = 687073350.

The previous prime is 687073337. The next prime is 687073363. The reversal of 687073351 is 153370786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687073351 - 2¹⁵ = 687040583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687073391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343536675 + 343536676.

It is an arithmetic number, because the mean of its divisors is an integer number (343536676).

Almost surely, 2^687073351 is an apocalyptic number.

687073351 is a deficient number, since it is larger than the sum of its proper divisors (1).

687073351 is an equidigital number, since it uses as much as digits as its factorization.

687073351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 687073351 is about 26212.0840644158. The cubic root of 687073351 is about 882.4044739805.

The spelling of 687073351 in words is "six hundred eighty-seven million, seventy-three thousand, three hundred fifty-one".