66068031 has 4 divisors (see below), whose sum is σ = 88090712. Its totient is φ = 44045352.

The previous prime is 66068027. The next prime is 66068047. The reversal of 66068031 is 13086066.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66068031 - 2² = 66068027 is a prime.

It is a super-2 number, since 2×66068031² = 8729969440433922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 66068031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66068021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11011336 + ... + 11011341.

It is an arithmetic number, because the mean of its divisors is an integer number (22022678).

Almost surely, 2^66068031 is an apocalyptic number.

66068031 is a deficient number, since it is larger than the sum of its proper divisors (22022681).

66068031 is a wasteful number, since it uses less digits than its factorization.

66068031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22022680.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 66068031 is about 8128.2243448369. The cubic root of 66068031 is about 404.2628077140.

The spelling of 66068031 in words is "sixty-six million, sixty-eight thousand, thirty-one".