66530083 has 4 divisors (see below), whose sum is σ = 67441528. Its totient is φ = 65618640.

The previous prime is 66530071. The next prime is 66530131. The reversal of 66530083 is 38003566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38003566 = 2 ⋅19001783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66530083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66530983) 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, 455613 + ... + 455758.

It is an arithmetic number, because the mean of its divisors is an integer number (16860382).

Almost surely, 2^66530083 is an apocalyptic number.

66530083 is a deficient number, since it is larger than the sum of its proper divisors (911445).

66530083 is an equidigital number, since it uses as much as digits as its factorization.

66530083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911444.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66530083 is about 8156.5975136695. The cubic root of 66530083 is about 405.2030338992.

The spelling of 66530083 in words is "sixty-six million, five hundred thirty thousand, eighty-three".