66143496 has 32 divisors (see below), whose sum is σ = 169394400. Its totient is φ = 21509760.

The previous prime is 66143479. The next prime is 66143501. The reversal of 66143496 is 69434166.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32626 + ... + 34593.

It is an arithmetic number, because the mean of its divisors is an integer number (5293575).

Almost surely, 2^66143496 is an apocalyptic number.

It is an amenable number.

66143496 is an abundant number, since it is smaller than the sum of its proper divisors (103250904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66143496 is a wasteful number, since it uses less digits than its factorization.

66143496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67269 (or 67265 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 66143496 is about 8132.8651777833. The cubic root of 66143496 is about 404.4166697462.

The spelling of 66143496 in words is "sixty-six million, one hundred forty-three thousand, four hundred ninety-six".