68663091 has 16 divisors (see below), whose sum is σ = 104914944. Its totient is φ = 39129024.

The previous prime is 68663059. The next prime is 68663113. The reversal of 68663091 is 19036686.

It is a happy number.

It is not a de Polignac number, because 68663091 - 2⁵ = 68663059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68663011) 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, 3775 + ... + 12311.

It is an arithmetic number, because the mean of its divisors is an integer number (6557184).

Almost surely, 2^68663091 is an apocalyptic number.

68663091 is a deficient number, since it is larger than the sum of its proper divisors (36251853).

68663091 is a wasteful number, since it uses less digits than its factorization.

68663091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8930.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 68663091 is about 8286.3195086842. The cubic root of 68663091 is about 409.4879409533.

The spelling of 68663091 in words is "sixty-eight million, six hundred sixty-three thousand, ninety-one".