66133642 has 8 divisors (see below), whose sum is σ = 104421600. Its totient is φ = 31326444.

The previous prime is 66133637. The next prime is 66133643. The reversal of 66133642 is 24633166.

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

It is not an unprimeable number, because it can be changed into a prime (66133643) 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, 870142 + ... + 870217.

It is an arithmetic number, because the mean of its divisors is an integer number (13052700).

Almost surely, 2^66133642 is an apocalyptic number.

66133642 is a deficient number, since it is larger than the sum of its proper divisors (38287958).

66133642 is a wasteful number, since it uses less digits than its factorization.

66133642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740380.

The product of its digits is 15552, while the sum is 31.

The square root of 66133642 is about 8132.2593416590. The cubic root of 66133642 is about 404.3965855352.

The spelling of 66133642 in words is "sixty-six million, one hundred thirty-three thousand, six hundred forty-two".