66814022 has 12 divisors (see below), whose sum is σ = 110160708. Its totient is φ = 30369900.

The previous prime is 66814009. The next prime is 66814037. The reversal of 66814022 is 22041866.

66814022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66814022² = 8928227071632968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 137804 + ... + 138287.

It is an arithmetic number, because the mean of its divisors is an integer number (9180059).

Almost surely, 2^66814022 is an apocalyptic number.

66814022 is a deficient number, since it is larger than the sum of its proper divisors (43346686).

66814022 is a wasteful number, since it uses less digits than its factorization.

66814022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276115 (or 276104 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 66814022 is about 8173.9844629165. The cubic root of 66814022 is about 405.7786614982.

Adding to 66814022 its reverse (22041866), we get a palindrome (88855888).

The spelling of 66814022 in words is "sixty-six million, eight hundred fourteen thousand, twenty-two".