68951918 has 40 divisors (see below), whose sum is σ = 122818248. Its totient is φ = 29026032.

The previous prime is 68951917. The next prime is 68951921. The reversal of 68951918 is 81915986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68951917) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 398480 + ... + 398652.

Almost surely, 2^68951918 is an apocalyptic number.

68951918 is a deficient number, since it is larger than the sum of its proper divisors (53866330).

68951918 is an equidigital number, since it uses as much as digits as its factorization.

68951918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 265 counting only the distinct ones).

The product of its digits is 155520, while the sum is 47.

The square root of 68951918 is about 8303.7291622499. The cubic root of 68951918 is about 410.0612995794.

The spelling of 68951918 in words is "sixty-eight million, nine hundred fifty-one thousand, nine hundred eighteen".