687693552 has 160 divisors (see below), whose sum is σ = 2197859328. Its totient is φ = 180430848.

The previous prime is 687693541. The next prime is 687693563. The reversal of 687693552 is 255396786.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (687693541) and next prime (687693563).

It is a junction number, because it is equal to n+sod(n) for n = 687693495 and 687693504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1366933 + ... + 1367435.

Almost surely, 2^687693552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687693552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098929664).

687693552 is an abundant number, since it is smaller than the sum of its proper divisors (1510165776).

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

687693552 is a wasteful number, since it uses less digits than its factorization.

687693552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The square root of 687693552 is about 26223.9118363375. The cubic root of 687693552 is about 882.6699010275.

The spelling of 687693552 in words is "six hundred eighty-seven million, six hundred ninety-three thousand, five hundred fifty-two".