66326242 has 4 divisors (see below), whose sum is σ = 99489366. Its totient is φ = 33163120.

The previous prime is 66326203. The next prime is 66326243. The reversal of 66326242 is 24262366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41615401 + 24710841 = 6451^2 + 4971^2 .

It is not an unprimeable number, because it can be changed into a prime (66326243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16581559 + ... + 16581562.

Almost surely, 2^66326242 is an apocalyptic number.

66326242 is a deficient number, since it is larger than the sum of its proper divisors (33163124).

66326242 is a wasteful number, since it uses less digits than its factorization.

66326242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33163123.

The product of its digits is 20736, while the sum is 31.

The square root of 66326242 is about 8144.0924601824. The cubic root of 66326242 is about 404.7887777318.

The spelling of 66326242 in words is "sixty-six million, three hundred twenty-six thousand, two hundred forty-two".