688274608 has 40 divisors (see below), whose sum is σ = 1526608640. Its totient is φ = 294477120.

The previous prime is 688274593. The next prime is 688274633. The reversal of 688274608 is 806472886.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65803 + ... + 75541.

It is an arithmetic number, because the mean of its divisors is an integer number (38165216).

Almost surely, 2^688274608 is an apocalyptic number.

It is an amenable number.

688274608 is an abundant number, since it is smaller than the sum of its proper divisors (838334032).

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

688274608 is a wasteful number, since it uses less digits than its factorization.

688274608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10385 (or 10379 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 688274608 is about 26234.9882408969. The cubic root of 688274608 is about 882.9184304576.

The spelling of 688274608 in words is "six hundred eighty-eight million, two hundred seventy-four thousand, six hundred eight".