68982381 has 32 divisors (see below), whose sum is σ = 110880000. Its totient is φ = 42133824.

The previous prime is 68982343. The next prime is 68982401. The reversal of 68982381 is 18328986.

It is not a de Polignac number, because 68982381 - 2¹¹ = 68980333 is a prime.

It is a super-2 number, since 2×68982381² = 9517137776858322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68982341) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 51640 + ... + 52958.

It is an arithmetic number, because the mean of its divisors is an integer number (3465000).

Almost surely, 2^68982381 is an apocalyptic number.

It is an amenable number.

68982381 is a deficient number, since it is larger than the sum of its proper divisors (41897619).

68982381 is a wasteful number, since it uses less digits than its factorization.

68982381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1484 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 68982381 is about 8305.5632560351. The cubic root of 68982381 is about 410.1216791336.

The spelling of 68982381 in words is "sixty-eight million, nine hundred eighty-two thousand, three hundred eighty-one".