68685786 has 32 divisors (see below), whose sum is σ = 164377920. Its totient is φ = 21133872.

The previous prime is 68685767. The next prime is 68685809. The reversal of 68685786 is 68758686.

68685786 is a `hidden beast` number, since 6 + 8 + 68 + 578 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48220 + ... + 49623.

It is an arithmetic number, because the mean of its divisors is an integer number (5136810).

Almost surely, 2^68685786 is an apocalyptic number.

68685786 is an abundant number, since it is smaller than the sum of its proper divisors (95692134).

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

68685786 is a wasteful number, since it uses less digits than its factorization.

68685786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97867 (or 97861 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 68685786 is about 8287.6888213784. The cubic root of 68685786 is about 409.5330515796.

Subtracting 68685786 from its reverse (68758686), we obtain a square (72900 = 270²).

The spelling of 68685786 in words is "sixty-eight million, six hundred eighty-five thousand, seven hundred eighty-six".