68020287 has 8 divisors (see below), whose sum is σ = 90733104. Its totient is φ = 45327168.

The previous prime is 68020261. The next prime is 68020289. The reversal of 68020287 is 78202086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68020287 - 2⁸ = 68020031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68020289) 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, 7933 + ... + 14105.

It is an arithmetic number, because the mean of its divisors is an integer number (11341638).

Almost surely, 2^68020287 is an apocalyptic number.

68020287 is a deficient number, since it is larger than the sum of its proper divisors (22712817).

68020287 is a wasteful number, since it uses less digits than its factorization.

68020287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9849.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 68020287 is about 8247.4412395603. The cubic root of 68020287 is about 408.2060966152.

The spelling of 68020287 in words is "sixty-eight million, twenty thousand, two hundred eighty-seven".