66610683 has 6 divisors (see below), whose sum is σ = 96215444. Its totient is φ = 44407116.

The previous prime is 66610681. The next prime is 66610697. The reversal of 66610683 is 38601666.

It is not a de Polignac number, because 66610683 - 2¹ = 66610681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66610681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3700585 + ... + 3700602.

Almost surely, 2^66610683 is an apocalyptic number.

66610683 is a deficient number, since it is larger than the sum of its proper divisors (29604761).

66610683 is a wasteful number, since it uses less digits than its factorization.

66610683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7401193 (or 7401190 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 66610683 is about 8161.5368038134. The cubic root of 66610683 is about 405.3665999293.

The spelling of 66610683 in words is "sixty-six million, six hundred ten thousand, six hundred eighty-three".