66881083 has 8 divisors (see below), whose sum is σ = 70530320. Its totient is φ = 63244800.

The previous prime is 66881063. The next prime is 66881117. The reversal of 66881083 is 38018866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66881083 - 2⁵ = 66881051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66881063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8491 + ... + 14347.

It is an arithmetic number, because the mean of its divisors is an integer number (8816290).

Almost surely, 2^66881083 is an apocalyptic number.

66881083 is a deficient number, since it is larger than the sum of its proper divisors (3649237).

66881083 is a wasteful number, since it uses less digits than its factorization.

66881083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 66881083 is about 8178.0855339132. The cubic root of 66881083 is about 405.9143756437.

The spelling of 66881083 in words is "sixty-six million, eight hundred eighty-one thousand, eighty-three".