687330276751 has 2 divisors, whose sum is σ = 687330276752. Its totient is φ = 687330276750.

The previous prime is 687330276709. The next prime is 687330276757. The reversal of 687330276751 is 157672033786.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687330276751 - 2³¹ = 685182793103 is a prime.

It is a super-2 number, since 2×687330276751² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 687330276692 and 687330276701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687330276757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343665138375 + 343665138376.

It is an arithmetic number, because the mean of its divisors is an integer number (343665138376).

Almost surely, 2^687330276751 is an apocalyptic number.

687330276751 is a deficient number, since it is larger than the sum of its proper divisors (1).

687330276751 is an equidigital number, since it uses as much as digits as its factorization.

687330276751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 687330276751 in words is "six hundred eighty-seven billion, three hundred thirty million, two hundred seventy-six thousand, seven hundred fifty-one".