66146143 has 16 divisors (see below), whose sum is σ = 77675584. Its totient is φ = 55157760.

The previous prime is 66146131. The next prime is 66146159. The reversal of 66146143 is 34164166.

It is not a de Polignac number, because 66146143 - 2⁵ = 66146111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66141143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40621 + ... + 42217.

It is an arithmetic number, because the mean of its divisors is an integer number (4854724).

Almost surely, 2^66146143 is an apocalyptic number.

66146143 is a deficient number, since it is larger than the sum of its proper divisors (11529441).

66146143 is a wasteful number, since it uses less digits than its factorization.

66146143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762.

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

The square root of 66146143 is about 8133.0279109321. The cubic root of 66146143 is about 404.4220644648.

The spelling of 66146143 in words is "sixty-six million, one hundred forty-six thousand, one hundred forty-three".