68539287 has 8 divisors (see below), whose sum is σ = 95359104. Its totient is φ = 43706168.

The previous prime is 68539277. The next prime is 68539337. The reversal of 68539287 is 78293586.

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

It is a cyclic number.

It is not a de Polignac number, because 68539287 - 2¹² = 68535191 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68539277) 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, 496593 + ... + 496730.

It is an arithmetic number, because the mean of its divisors is an integer number (11919888).

Almost surely, 2^68539287 is an apocalyptic number.

68539287 is a deficient number, since it is larger than the sum of its proper divisors (26819817).

68539287 is a wasteful number, since it uses less digits than its factorization.

68539287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993349.

The product of its digits is 725760, while the sum is 48.

The square root of 68539287 is about 8278.8457528813. The cubic root of 68539287 is about 409.2416817943.

The spelling of 68539287 in words is "sixty-eight million, five hundred thirty-nine thousand, two hundred eighty-seven".