68369181 has 16 divisors (see below), whose sum is σ = 94227840. Its totient is φ = 44065280.

The previous prime is 68369143. The next prime is 68369219. The reversal of 68369181 is 18196386.

It is an interprime number because it is at equal distance from previous prime (68369143) and next prime (68369219).

It is a cyclic number.

It is not a de Polignac number, because 68369181 - 2⁶ = 68369117 is a prime.

It is a super-2 number, since 2×68369181² = 9348689821221522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68369111) 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 15 ways as a sum of consecutive naturals, for example, 11440 + ... + 16358.

It is an arithmetic number, because the mean of its divisors is an integer number (5889240).

Almost surely, 2^68369181 is an apocalyptic number.

It is an amenable number.

68369181 is a deficient number, since it is larger than the sum of its proper divisors (25858659).

68369181 is a wasteful number, since it uses less digits than its factorization.

68369181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076.

The product of its digits is 62208, while the sum is 42.

The square root of 68369181 is about 8268.5658369514. The cubic root of 68369181 is about 408.9028389710.

The spelling of 68369181 in words is "sixty-eight million, three hundred sixty-nine thousand, one hundred eighty-one".