66449083 has 4 divisors (see below), whose sum is σ = 66895200. Its totient is φ = 66002968.

The previous prime is 66449041. The next prime is 66449087. The reversal of 66449083 is 38094466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66449083 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (66449087) 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, 222835 + ... + 223132.

It is an arithmetic number, because the mean of its divisors is an integer number (16723800).

Almost surely, 2^66449083 is an apocalyptic number.

66449083 is a deficient number, since it is larger than the sum of its proper divisors (446117).

66449083 is a wasteful number, since it uses less digits than its factorization.

66449083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446116.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 66449083 is about 8151.6306957565. The cubic root of 66449083 is about 405.0385229830.

The spelling of 66449083 in words is "sixty-six million, four hundred forty-nine thousand, eighty-three".