688472084 has 12 divisors (see below), whose sum is σ = 1205665524. Its totient is φ = 343996224.

The previous prime is 688472077. The next prime is 688472107. The reversal of 688472084 is 480274886.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 680062084 + 8410000 = 26078^2 + 2900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53417 + ... + 65040.

It is an arithmetic number, because the mean of its divisors is an integer number (100472127).

Almost surely, 2^688472084 is an apocalyptic number.

It is an amenable number.

688472084 is a deficient number, since it is larger than the sum of its proper divisors (517193440).

688472084 is a wasteful number, since it uses less digits than its factorization.

688472084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119914 (or 119912 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 688472084 is about 26238.7515709113. The cubic root of 688472084 is about 883.0028630981.

The spelling of 688472084 in words is "six hundred eighty-eight million, four hundred seventy-two thousand, eighty-four".