687902648 has 64 divisors (see below), whose sum is σ = 1373137920. Its totient is φ = 322560000.

The previous prime is 687902647. The next prime is 687902651. The reversal of 687902648 is 846209786.

It is a junction number, because it is equal to n+sod(n) for n = 687902596 and 687902605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687902641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2676536 + ... + 2676792.

It is an arithmetic number, because the mean of its divisors is an integer number (21455280).

Almost surely, 2^687902648 is an apocalyptic number.

It is an amenable number.

687902648 is a deficient number, since it is larger than the sum of its proper divisors (685235272).

687902648 is a wasteful number, since it uses less digits than its factorization.

687902648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 687902648 is about 26227.8982764536. The cubic root of 687902648 is about 882.7593517442.

The spelling of 687902648 in words is "six hundred eighty-seven million, nine hundred two thousand, six hundred forty-eight".