687282034646 has 8 divisors (see below), whose sum is σ = 1033149669024. Its totient is φ = 342898811640.

The previous prime is 687282034631. The next prime is 687282034651. The reversal of 687282034646 is 646430282786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 687282034591 and 687282034600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371101685 + ... + 371103536.

It is an arithmetic number, because the mean of its divisors is an integer number (129143708628).

Almost surely, 2^687282034646 is an apocalyptic number.

687282034646 is a deficient number, since it is larger than the sum of its proper divisors (345867634378).

687282034646 is a wasteful number, since it uses less digits than its factorization.

687282034646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742205686.

The product of its (nonzero) digits is 18579456, while the sum is 56.

The spelling of 687282034646 in words is "six hundred eighty-seven billion, two hundred eighty-two million, thirty-four thousand, six hundred forty-six".