66980883 has 4 divisors (see below), whose sum is σ = 89307848. Its totient is φ = 44653920.

The previous prime is 66980873. The next prime is 66980891. The reversal of 66980883 is 38808966.

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

It is not a de Polignac number, because 66980883 - 2⁶ = 66980819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66980873) 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, 11163478 + ... + 11163483.

It is an arithmetic number, because the mean of its divisors is an integer number (22326962).

Almost surely, 2^66980883 is an apocalyptic number.

66980883 is a deficient number, since it is larger than the sum of its proper divisors (22326965).

66980883 is a wasteful number, since it uses less digits than its factorization.

66980883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22326964.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 66980883 is about 8184.1849319282. The cubic root of 66980883 is about 406.1161772083.

The spelling of 66980883 in words is "sixty-six million, nine hundred eighty thousand, eight hundred eighty-three".