68680084 has 36 divisors (see below), whose sum is σ = 135371124. Its totient is φ = 30448000.

The previous prime is 68680081. The next prime is 68680109. The reversal of 68680084 is 48008686.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7683984 + 60996100 = 2772^2 + 7810^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68680081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18114 + ... + 21574.

It is an arithmetic number, because the mean of its divisors is an integer number (3760309).

Almost surely, 2^68680084 is an apocalyptic number.

It is an amenable number.

68680084 is a deficient number, since it is larger than the sum of its proper divisors (66691040).

68680084 is a wasteful number, since it uses less digits than its factorization.

68680084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528 (or 3515 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 68680084 is about 8287.3448100100. The cubic root of 68680084 is about 409.5217187056.

The spelling of 68680084 in words is "sixty-eight million, six hundred eighty thousand, eighty-four".