66722883 has 4 divisors (see below), whose sum is σ = 88963848. Its totient is φ = 44481920.

The previous prime is 66722861. The next prime is 66722891. The reversal of 66722883 is 38822766.

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

It is a cyclic number.

It is not a de Polignac number, because 66722883 - 2¹² = 66718787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66722893) 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, 11120478 + ... + 11120483.

It is an arithmetic number, because the mean of its divisors is an integer number (22240962).

Almost surely, 2^66722883 is an apocalyptic number.

66722883 is a deficient number, since it is larger than the sum of its proper divisors (22240965).

66722883 is a wasteful number, since it uses less digits than its factorization.

66722883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22240964.

The product of its digits is 193536, while the sum is 42.

The square root of 66722883 is about 8168.4076171553. The cubic root of 66722883 is about 405.5940740491.

The spelling of 66722883 in words is "sixty-six million, seven hundred twenty-two thousand, eight hundred eighty-three".