68868506 has 8 divisors (see below), whose sum is σ = 118060320. Its totient is φ = 29515068.

The previous prime is 68868497. The next prime is 68868511. The reversal of 68868506 is 60586886.

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

It is a super-2 number, since 2×68868506² = 9485742237344072, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2459576 + ... + 2459603.

It is an arithmetic number, because the mean of its divisors is an integer number (14757540).

Almost surely, 2^68868506 is an apocalyptic number.

68868506 is a deficient number, since it is larger than the sum of its proper divisors (49191814).

68868506 is a wasteful number, since it uses less digits than its factorization.

68868506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919188.

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 68868506 is about 8298.7050797097. The cubic root of 68868506 is about 409.8958807593.

The spelling of 68868506 in words is "sixty-eight million, eight hundred sixty-eight thousand, five hundred six".