68981796 has 36 divisors (see below), whose sum is σ = 187785052. Its totient is φ = 21225024.

The previous prime is 68981791. The next prime is 68981813. The reversal of 68981796 is 69718986.

It can be written as a sum of positive squares in 2 ways, for example, as 28836900 + 40144896 = 5370^2 + 6336^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (68981791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73231 + ... + 74166.

Almost surely, 2^68981796 is an apocalyptic number.

It is an amenable number.

68981796 is an abundant number, since it is smaller than the sum of its proper divisors (118803256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68981796 is a wasteful number, since it uses less digits than its factorization.

68981796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147420 (or 147415 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 68981796 is about 8305.5280386018. The cubic root of 68981796 is about 410.1205197947.

The spelling of 68981796 in words is "sixty-eight million, nine hundred eighty-one thousand, seven hundred ninety-six".