68927785 has 8 divisors (see below), whose sum is σ = 83472840. Its totient is φ = 54635904.

The previous prime is 68927783. The next prime is 68927797. The reversal of 68927785 is 58772986.

It can be written as a sum of positive squares in 4 ways, for example, as 2944656 + 65983129 = 1716^2 + 8123^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68927785 - 2¹ = 68927783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68927783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62692 + ... + 63781.

It is an arithmetic number, because the mean of its divisors is an integer number (10434105).

Almost surely, 2^68927785 is an apocalyptic number.

It is an amenable number.

68927785 is a deficient number, since it is larger than the sum of its proper divisors (14545055).

68927785 is a wasteful number, since it uses less digits than its factorization.

68927785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126587.

The product of its digits is 1693440, while the sum is 52.

The square root of 68927785 is about 8302.2758927899. The cubic root of 68927785 is about 410.0134538516.

The spelling of 68927785 in words is "sixty-eight million, nine hundred twenty-seven thousand, seven hundred eighty-five".