68356287 has 12 divisors (see below), whose sum is σ = 99459360. Its totient is φ = 45237408.

The previous prime is 68356261. The next prime is 68356289. The reversal of 68356287 is 78265386.

68356287 is a `hidden beast` number, since 6 + 8 + 3 + 562 + 87 = 666.

It is not a de Polignac number, because 68356287 - 2¹⁰ = 68355263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68356289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26487 + ... + 28952.

It is an arithmetic number, because the mean of its divisors is an integer number (8288280).

Almost surely, 2^68356287 is an apocalyptic number.

68356287 is a deficient number, since it is larger than the sum of its proper divisors (31103073).

68356287 is a wasteful number, since it uses less digits than its factorization.

68356287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55582 (or 55579 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 68356287 is about 8267.7861002810. The cubic root of 68356287 is about 408.8771318487.

Subtracting 68356287 from its reverse (78265386), we obtain a palindrome (9909099).

The spelling of 68356287 in words is "sixty-eight million, three hundred fifty-six thousand, two hundred eighty-seven".