687333648 has 20 divisors (see below), whose sum is σ = 1775612048. Its totient is φ = 229111200.

The previous prime is 687333641. The next prime is 687333659. The reversal of 687333648 is 846333786.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 14319451 = 687333648 / (6 + 8 + 7 + 3 + 3 + 3 + 6 + 4 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 687333597 and 687333606.

It is not an unprimeable number, because it can be changed into a prime (687333641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7159678 + ... + 7159773.

Almost surely, 2^687333648 is an apocalyptic number.

It is an amenable number.

687333648 is an abundant number, since it is smaller than the sum of its proper divisors (1088278400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687333648 is a wasteful number, since it uses less digits than its factorization.

687333648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14319462 (or 14319456 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 48.

The square root of 687333648 is about 26217.0488041656. The cubic root of 687333648 is about 882.5158925733.

The spelling of 687333648 in words is "six hundred eighty-seven million, three hundred thirty-three thousand, six hundred forty-eight".