687330276749 has 12 divisors (see below), whose sum is σ = 704516720544. Its totient is φ = 670497654024.

The previous prime is 687330276709. The next prime is 687330276751. The reversal of 687330276749 is 947672033786.

It is not a de Polignac number, because 687330276749 - 2²⁴ = 687313499533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 687330276691 and 687330276700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687330276709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280907 + ... + 1205640.

It is an arithmetic number, because the mean of its divisors is an integer number (58709726712).

Almost surely, 2^687330276749 is an apocalyptic number.

It is an amenable number.

687330276749 is a deficient number, since it is larger than the sum of its proper divisors (17186443795).

687330276749 is a wasteful number, since it uses less digits than its factorization.

687330276749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486784 (or 1486717 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 62.

The spelling of 687330276749 in words is "six hundred eighty-seven billion, three hundred thirty million, two hundred seventy-six thousand, seven hundred forty-nine".