68209263 has 8 divisors (see below), whose sum is σ = 101050800. Its totient is φ = 45472824.

The previous prime is 68209261. The next prime is 68209289. The reversal of 68209263 is 36290286.

It is not a de Polignac number, because 68209263 - 2¹ = 68209261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68209261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263108 + ... + 1263161.

It is an arithmetic number, because the mean of its divisors is an integer number (12631350).

Almost surely, 2^68209263 is an apocalyptic number.

68209263 is a deficient number, since it is larger than the sum of its proper divisors (32841537).

68209263 is a wasteful number, since it uses less digits than its factorization.

68209263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526278 (or 2526272 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 68209263 is about 8258.8899375158. The cubic root of 68209263 is about 408.5837772070.

The spelling of 68209263 in words is "sixty-eight million, two hundred nine thousand, two hundred sixty-three".