687237383479 has 2 divisors, whose sum is σ = 687237383480. Its totient is φ = 687237383478.

The previous prime is 687237383467. The next prime is 687237383491. The reversal of 687237383479 is 974383732786.

It is a balanced prime because it is at equal distance from previous prime (687237383467) and next prime (687237383491).

It is a cyclic number.

It is not a de Polignac number, because 687237383479 - 2⁹ = 687237382967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687237383449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343618691739 + 343618691740.

It is an arithmetic number, because the mean of its divisors is an integer number (343618691740).

Almost surely, 2^687237383479 is an apocalyptic number.

687237383479 is a deficient number, since it is larger than the sum of its proper divisors (1).

687237383479 is an equidigital number, since it uses as much as digits as its factorization.

687237383479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256048128, while the sum is 67.

The spelling of 687237383479 in words is "six hundred eighty-seven billion, two hundred thirty-seven million, three hundred eighty-three thousand, four hundred seventy-nine".