68788661 has 8 divisors (see below), whose sum is σ = 71208960. Its totient is φ = 66397968.

The previous prime is 68788649. The next prime is 68788669. The reversal of 68788661 is 16688786.

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 68788661 - 2¹⁰ = 68787637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68788669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2621 + ... + 12018.

It is an arithmetic number, because the mean of its divisors is an integer number (8901120).

Almost surely, 2^68788661 is an apocalyptic number.

It is an amenable number.

68788661 is a deficient number, since it is larger than the sum of its proper divisors (2420299).

68788661 is a wasteful number, since it uses less digits than its factorization.

68788661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14803.

The product of its digits is 774144, while the sum is 50.

The square root of 68788661 is about 8293.8929942458. The cubic root of 68788661 is about 409.7374106796.

The spelling of 68788661 in words is "sixty-eight million, seven hundred eighty-eight thousand, six hundred sixty-one".