66875542 has 8 divisors (see below), whose sum is σ = 100818000. Its totient is φ = 33269544.

The previous prime is 66875503. The next prime is 66875561. The reversal of 66875542 is 24557866.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83617 + ... + 84412.

It is an arithmetic number, because the mean of its divisors is an integer number (12602250).

Almost surely, 2^66875542 is an apocalyptic number.

66875542 is a deficient number, since it is larger than the sum of its proper divisors (33942458).

66875542 is a wasteful number, since it uses less digits than its factorization.

66875542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168230.

The product of its digits is 403200, while the sum is 43.

The square root of 66875542 is about 8177.7467556779. The cubic root of 66875542 is about 405.9031655298.

The spelling of 66875542 in words is "sixty-six million, eight hundred seventy-five thousand, five hundred forty-two".