66750542 has 8 divisors (see below), whose sum is σ = 102568032. Its totient is φ = 32561200.

The previous prime is 66750529. The next prime is 66750557. The reversal of 66750542 is 24505766.

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, 406934 + ... + 407097.

It is an arithmetic number, because the mean of its divisors is an integer number (12821004).

Almost surely, 2^66750542 is an apocalyptic number.

66750542 is a deficient number, since it is larger than the sum of its proper divisors (35817490).

66750542 is a wasteful number, since it uses less digits than its factorization.

66750542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814074.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 66750542 is about 8170.1004889781. The cubic root of 66750542 is about 405.6501106801.

The spelling of 66750542 in words is "sixty-six million, seven hundred fifty thousand, five hundred forty-two".