68399604 has 72 divisors (see below), whose sum is σ = 212808960. Its totient is φ = 18038592.

The previous prime is 68399581. The next prime is 68399629. The reversal of 68399604 is 40699386.

68399604 is a `hidden beast` number, since 6 + 8 + 39 + 9 + 604 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 68399604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7164 + ... + 13715.

It is an arithmetic number, because the mean of its divisors is an integer number (2955680).

Almost surely, 2^68399604 is an apocalyptic number.

It is an amenable number.

68399604 is an abundant number, since it is smaller than the sum of its proper divisors (144409356).

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

68399604 is a wasteful number, since it uses less digits than its factorization.

68399604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20909 (or 20904 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 68399604 is about 8270.4053105032. The cubic root of 68399604 is about 408.9634813352.

The spelling of 68399604 in words is "sixty-eight million, three hundred ninety-nine thousand, six hundred four".