68775291 has 32 divisors (see below), whose sum is σ = 111827520. Its totient is φ = 41513472.

The previous prime is 68775283. The next prime is 68775323. The reversal of 68775291 is 19257786.

It is not a de Polignac number, because 68775291 - 2³ = 68775283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68775691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16755 + ... + 20451.

It is an arithmetic number, because the mean of its divisors is an integer number (3494610).

Almost surely, 2^68775291 is an apocalyptic number.

68775291 is a deficient number, since it is larger than the sum of its proper divisors (43052229).

68775291 is a wasteful number, since it uses less digits than its factorization.

68775291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772 (or 3766 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 68775291 is about 8293.0869403377. The cubic root of 68775291 is about 409.7108629703.

The spelling of 68775291 in words is "sixty-eight million, seven hundred seventy-five thousand, two hundred ninety-one".