66203742 has 16 divisors (see below), whose sum is σ = 144444672. Its totient is φ = 20061720.

The previous prime is 66203741. The next prime is 66203747. The reversal of 66203742 is 24730266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66203741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501478 + ... + 501609.

It is an arithmetic number, because the mean of its divisors is an integer number (9027792).

Almost surely, 2^66203742 is an apocalyptic number.

66203742 is an abundant number, since it is smaller than the sum of its proper divisors (78240930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66203742 is a wasteful number, since it uses less digits than its factorization.

66203742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003103.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 66203742 is about 8136.5681954986. The cubic root of 66203742 is about 404.5394184896.

The spelling of 66203742 in words is "sixty-six million, two hundred three thousand, seven hundred forty-two".