66771022 has 16 divisors (see below), whose sum is σ = 101423520. Its totient is φ = 32965632.

The previous prime is 66771011. The next prime is 66771031. The reversal of 66771022 is 22017766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98878 + ... + 99550.

It is an arithmetic number, because the mean of its divisors is an integer number (6338970).

Almost surely, 2^66771022 is an apocalyptic number.

66771022 is a deficient number, since it is larger than the sum of its proper divisors (34652498).

66771022 is a wasteful number, since it uses less digits than its factorization.

66771022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 66771022 is about 8171.3537434136. The cubic root of 66771022 is about 405.6915928140.

Adding to 66771022 its reverse (22017766), we get a palindrome (88788788).

The spelling of 66771022 in words is "sixty-six million, seven hundred seventy-one thousand, twenty-two".