68786689 has 4 divisors (see below), whose sum is σ = 69813424. Its totient is φ = 67759956.

The previous prime is 68786681. The next prime is 68786693. The reversal of 68786689 is 98668786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68786689 - 2³ = 68786681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68786681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513267 + ... + 513400.

It is an arithmetic number, because the mean of its divisors is an integer number (17453356).

Almost surely, 2^68786689 is an apocalyptic number.

It is an amenable number.

68786689 is a deficient number, since it is larger than the sum of its proper divisors (1026735).

68786689 is a wasteful number, since it uses less digits than its factorization.

68786689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026734.

The product of its digits is 6967296, while the sum is 58.

The square root of 68786689 is about 8293.7741107411. The cubic root of 68786689 is about 409.7334952577.

The spelling of 68786689 in words is "sixty-eight million, seven hundred eighty-six thousand, six hundred eighty-nine".