66633542 has 8 divisors (see below), whose sum is σ = 100669800. Its totient is φ = 33076944.

The previous prime is 66633527. The next prime is 66633547. The reversal of 66633542 is 24533666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66633547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119567 + ... + 120122.

It is an arithmetic number, because the mean of its divisors is an integer number (12583725).

Almost surely, 2^66633542 is an apocalyptic number.

66633542 is a deficient number, since it is larger than the sum of its proper divisors (34036258).

66633542 is a wasteful number, since it uses less digits than its factorization.

66633542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239830.

The product of its digits is 77760, while the sum is 35.

The square root of 66633542 is about 8162.9370939632. The cubic root of 66633542 is about 405.4129649412.

The spelling of 66633542 in words is "sixty-six million, six hundred thirty-three thousand, five hundred forty-two".