66501242 has 8 divisors (see below), whose sum is σ = 99792000. Its totient is φ = 33237244.

The previous prime is 66501241. The next prime is 66501271. The reversal of 66501242 is 24210566.

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 (66501241) 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, 1559 + ... + 11637.

It is an arithmetic number, because the mean of its divisors is an integer number (12474000).

Almost surely, 2^66501242 is an apocalyptic number.

66501242 is a deficient number, since it is larger than the sum of its proper divisors (33290758).

66501242 is a wasteful number, since it uses less digits than its factorization.

66501242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13380.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 66501242 is about 8154.8293667004. The cubic root of 66501242 is about 405.1444731736.

The spelling of 66501242 in words is "sixty-six million, five hundred one thousand, two hundred forty-two".