66329842 has 4 divisors (see below), whose sum is σ = 99494766. Its totient is φ = 33164920.

The previous prime is 66329821. The next prime is 66329849. The reversal of 66329842 is 24892366.

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., 58201641 + 8128201 = 7629^2 + 2851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66329795 and 66329804.

It is not an unprimeable number, because it can be changed into a prime (66329849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16582459 + ... + 16582462.

Almost surely, 2^66329842 is an apocalyptic number.

66329842 is a deficient number, since it is larger than the sum of its proper divisors (33164924).

66329842 is a wasteful number, since it uses less digits than its factorization.

66329842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33164923.

The product of its digits is 124416, while the sum is 40.

The square root of 66329842 is about 8144.3134762852. The cubic root of 66329842 is about 404.7961011943.

The spelling of 66329842 in words is "sixty-six million, three hundred twenty-nine thousand, eight hundred forty-two".