68116490 has 32 divisors (see below), whose sum is σ = 132523776. Its totient is φ = 25058880.

The previous prime is 68116471. The next prime is 68116507. The reversal of 68116490 is 9461186.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 68116490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42239 + ... + 43821.

It is an arithmetic number, because the mean of its divisors is an integer number (4141368).

Almost surely, 2^68116490 is an apocalyptic number.

68116490 is a deficient number, since it is larger than the sum of its proper divisors (64407286).

68116490 is a wasteful number, since it uses less digits than its factorization.

68116490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 68116490 is about 8253.2714725738. The cubic root of 68116490 is about 408.3984517370.

It can be divided in two parts, 681 and 16490, that added together give a palindrome (17171).

The spelling of 68116490 in words is "sixty-eight million, one hundred sixteen thousand, four hundred ninety".