68866031 has 16 divisors (see below), whose sum is σ = 78853824. Its totient is φ = 59579904.

The previous prime is 68866003. The next prime is 68866043. The reversal of 68866031 is 13066886.

It is a cyclic number.

It is not a de Polignac number, because 68866031 - 2¹⁰ = 68865007 is a prime.

It is a super-2 number, since 2×68866031² = 9485060451385922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68866631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69566 + ... + 70548.

It is an arithmetic number, because the mean of its divisors is an integer number (4928364).

Almost surely, 2^68866031 is an apocalyptic number.

68866031 is a deficient number, since it is larger than the sum of its proper divisors (9987793).

68866031 is a wasteful number, since it uses less digits than its factorization.

68866031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 68866031 is about 8298.5559587196. Note that the first 3 decimals coincide. The cubic root of 68866031 is about 409.8909704139.

The spelling of 68866031 in words is "sixty-eight million, eight hundred sixty-six thousand, thirty-one".