66242365 has 24 divisors (see below), whose sum is σ = 93419352. Its totient is φ = 44956800.

The previous prime is 66242359. The next prime is 66242389. The reversal of 66242365 is 56324266.

It can be written as a sum of positive squares in 4 ways, for example, as 5433561 + 60808804 = 2331^2 + 7798^2 .

It is not a de Polignac number, because 66242365 - 2³ = 66242357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66242365.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23407 + ... + 26083.

It is an arithmetic number, because the mean of its divisors is an integer number (3892473).

Almost surely, 2^66242365 is an apocalyptic number.

It is an amenable number.

66242365 is a deficient number, since it is larger than the sum of its proper divisors (27176987).

66242365 is a wasteful number, since it uses less digits than its factorization.

66242365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797 (or 2790 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 66242365 is about 8138.9412702144. The cubic root of 66242365 is about 404.6180720926.

The spelling of 66242365 in words is "sixty-six million, two hundred forty-two thousand, three hundred sixty-five".