68678665 has 8 divisors (see below), whose sum is σ = 89906688. Its totient is φ = 49948080.

The previous prime is 68678653. The next prime is 68678683. The reversal of 68678665 is 56687686.

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

It is not a de Polignac number, because 68678665 - 2⁹ = 68678153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624297 + ... + 624406.

It is an arithmetic number, because the mean of its divisors is an integer number (11238336).

Almost surely, 2^68678665 is an apocalyptic number.

It is an amenable number.

68678665 is a deficient number, since it is larger than the sum of its proper divisors (21228023).

68678665 is a wasteful number, since it uses less digits than its factorization.

68678665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248719.

The product of its digits is 2903040, while the sum is 52.

The square root of 68678665 is about 8287.2591971049. The cubic root of 68678665 is about 409.5188983085.

The spelling of 68678665 in words is "sixty-eight million, six hundred seventy-eight thousand, six hundred sixty-five".