66083143 has 4 divisors (see below), whose sum is σ = 75523600. Its totient is φ = 56642688.

The previous prime is 66083057. The next prime is 66083153. The reversal of 66083143 is 34138066.

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 66083143 - 2¹⁷ = 65952071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66083153) 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, 4720218 + ... + 4720231.

It is an arithmetic number, because the mean of its divisors is an integer number (18880900).

Almost surely, 2^66083143 is an apocalyptic number.

66083143 is a deficient number, since it is larger than the sum of its proper divisors (9440457).

66083143 is an equidigital number, since it uses as much as digits as its factorization.

66083143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440456.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66083143 is about 8129.1538920111. The cubic root of 66083143 is about 404.2936282371.

The spelling of 66083143 in words is "sixty-six million, eighty-three thousand, one hundred forty-three".