66982311 has 12 divisors (see below), whose sum is σ = 105548040. Its totient is φ = 40595280.

The previous prime is 66982309. The next prime is 66982327. The reversal of 66982311 is 11328966.

It is not a de Polignac number, because 66982311 - 2¹ = 66982309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66982361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338196 + ... + 338393.

It is an arithmetic number, because the mean of its divisors is an integer number (8795670).

Almost surely, 2^66982311 is an apocalyptic number.

66982311 is a deficient number, since it is larger than the sum of its proper divisors (38565729).

66982311 is a wasteful number, since it uses less digits than its factorization.

66982311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676606 (or 676603 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 66982311 is about 8184.2721728936. The cubic root of 66982311 is about 406.1190632545.

It can be divided in two parts, 6698 and 2311, that added together give a palindrome (9009).

The spelling of 66982311 in words is "sixty-six million, nine hundred eighty-two thousand, three hundred eleven".