66143054 has 8 divisors (see below), whose sum is σ = 99262800. Its totient is φ = 33055456.

The previous prime is 66143041. The next prime is 66143059. The reversal of 66143054 is 45034166.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66143059) 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, 1979 + ... + 11670.

It is an arithmetic number, because the mean of its divisors is an integer number (12407850).

Almost surely, 2^66143054 is an apocalyptic number.

66143054 is a deficient number, since it is larger than the sum of its proper divisors (33119746).

66143054 is a wasteful number, since it uses less digits than its factorization.

66143054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16074.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 66143054 is about 8132.8380040426. The cubic root of 66143054 is about 404.4157689140.

The spelling of 66143054 in words is "sixty-six million, one hundred forty-three thousand, fifty-four".