687237383279 has 2 divisors, whose sum is σ = 687237383280. Its totient is φ = 687237383278.

The previous prime is 687237383263. The next prime is 687237383317. The reversal of 687237383279 is 972383732786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687237383279 - 2⁴ = 687237383263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687237383479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343618691639 + 343618691640.

It is an arithmetic number, because the mean of its divisors is an integer number (343618691640).

Almost surely, 2^687237383279 is an apocalyptic number.

687237383279 is a deficient number, since it is larger than the sum of its proper divisors (1).

687237383279 is an equidigital number, since it uses as much as digits as its factorization.

687237383279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128024064, while the sum is 65.

The spelling of 687237383279 in words is "six hundred eighty-seven billion, two hundred thirty-seven million, three hundred eighty-three thousand, two hundred seventy-nine".