66242836 has 12 divisors (see below), whose sum is σ = 126463680. Its totient is φ = 30110360.

The previous prime is 66242831. The next prime is 66242849. The reversal of 66242836 is 63824266.

66242836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66242836² = 8776226642645792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66242795 and 66242804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66242831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752716 + ... + 752803.

It is an arithmetic number, because the mean of its divisors is an integer number (10538640).

Almost surely, 2^66242836 is an apocalyptic number.

It is an amenable number.

66242836 is a deficient number, since it is larger than the sum of its proper divisors (60220844).

66242836 is a wasteful number, since it uses less digits than its factorization.

66242836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505534 (or 1505532 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 66242836 is about 8138.9702051304. The cubic root of 66242836 is about 404.6190310693.

The spelling of 66242836 in words is "sixty-six million, two hundred forty-two thousand, eight hundred thirty-six".