68287311 has 48 divisors (see below), whose sum is σ = 109549440. Its totient is φ = 40824000.

The previous prime is 68287279. The next prime is 68287313. The reversal of 68287311 is 11378286.

68287311 is a `hidden beast` number, since 68 + 287 + 311 = 666.

It is not a de Polignac number, because 68287311 - 2⁵ = 68287279 is a prime.

It is a super-2 number, since 2×68287311² = 9326313687221442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68287313) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271936 + ... + 272186.

It is an arithmetic number, because the mean of its divisors is an integer number (2282280).

Almost surely, 2^68287311 is an apocalyptic number.

68287311 is a deficient number, since it is larger than the sum of its proper divisors (41262129).

68287311 is a wasteful number, since it uses less digits than its factorization.

68287311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 353 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 68287311 is about 8263.6136768365. The cubic root of 68287311 is about 408.7395575707.

The spelling of 68287311 in words is "sixty-eight million, two hundred eighty-seven thousand, three hundred eleven".