68632291 has 24 divisors (see below), whose sum is σ = 86637264. Its totient is φ = 53887680.

The previous prime is 68632271. The next prime is 68632309. The reversal of 68632291 is 19223686.

It is not a de Polignac number, because 68632291 - 2⁹ = 68631779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68632291.

It is not an unprimeable number, because it can be changed into a prime (68632271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103501 + ... + 104161.

It is an arithmetic number, because the mean of its divisors is an integer number (3609886).

Almost surely, 2^68632291 is an apocalyptic number.

68632291 is a deficient number, since it is larger than the sum of its proper divisors (18004973).

68632291 is a wasteful number, since it uses less digits than its factorization.

68632291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 844 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 68632291 is about 8284.4608152854. The cubic root of 68632291 is about 409.4267041973.

The spelling of 68632291 in words is "sixty-eight million, six hundred thirty-two thousand, two hundred ninety-one".