688530832 has 80 divisors (see below), whose sum is σ = 1518902784. Its totient is φ = 299520000.

The previous prime is 688530823. The next prime is 688530833. The reversal of 688530832 is 238035886.

It is a super-2 number, since 2×688530832² = 948149413229224448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (688530833) 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, 528582 + ... + 529882.

Almost surely, 2^688530832 is an apocalyptic number.

688530832 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688530832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759451392).

688530832 is an abundant number, since it is smaller than the sum of its proper divisors (830371952).

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

688530832 is a wasteful number, since it uses less digits than its factorization.

688530832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 688530832 is about 26239.8710362685. The cubic root of 688530832 is about 883.0279782180.

The spelling of 688530832 in words is "six hundred eighty-eight million, five hundred thirty thousand, eight hundred thirty-two".