68613787 has 16 divisors (see below), whose sum is σ = 77220864. Its totient is φ = 60424000.

The previous prime is 68613763. The next prime is 68613803. The reversal of 68613787 is 78731686.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68613787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68613707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74862 + ... + 75772.

It is an arithmetic number, because the mean of its divisors is an integer number (4826304).

Almost surely, 2^68613787 is an apocalyptic number.

68613787 is a deficient number, since it is larger than the sum of its proper divisors (8607077).

68613787 is a wasteful number, since it uses less digits than its factorization.

68613787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130.

The product of its digits is 338688, while the sum is 46.

The square root of 68613787 is about 8283.3439503621. The cubic root of 68613787 is about 409.3899056166.

It can be divided in two parts, 6861 and 3787, that added together give a cube (10648 = 22³).

The spelling of 68613787 in words is "sixty-eight million, six hundred thirteen thousand, seven hundred eighty-seven".