68523685 has 16 divisors (see below), whose sum is σ = 87537456. Its totient is φ = 51314688.

The previous prime is 68523677. The next prime is 68523757. The reversal of 68523685 is 58632586.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2556801 + 65966884 = 1599^2 + 8122^2 .

It is a cyclic number.

It is not a de Polignac number, because 68523685 - 2³ = 68523677 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 14317 + ... + 18493.

It is an arithmetic number, because the mean of its divisors is an integer number (5471091).

Almost surely, 2^68523685 is an apocalyptic number.

It is an amenable number.

68523685 is a deficient number, since it is larger than the sum of its proper divisors (19013771).

68523685 is a wasteful number, since it uses less digits than its factorization.

68523685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392.

The product of its digits is 345600, while the sum is 43.

The square root of 68523685 is about 8277.9034181367. The cubic root of 68523685 is about 409.2106267428.

The spelling of 68523685 in words is "sixty-eight million, five hundred twenty-three thousand, six hundred eighty-five".