74821165 has 8 divisors (see below), whose sum is σ = 95067000. Its totient is φ = 56335872.

The previous prime is 74821163. The next prime is 74821211. The reversal of 74821165 is 56112847.

It can be written as a sum of positive squares in 4 ways, for example, as 24098281 + 50722884 = 4909^2 + 7122^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74821165 - 2¹ = 74821163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74821165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74821163) 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, 440040 + ... + 440209.

It is an arithmetic number, because the mean of its divisors is an integer number (11883375).

Almost surely, 2^74821165 is an apocalyptic number.

It is an amenable number.

74821165 is a deficient number, since it is larger than the sum of its proper divisors (20245835).

74821165 is a wasteful number, since it uses less digits than its factorization.

74821165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880271.

The product of its digits is 13440, while the sum is 34.

The square root of 74821165 is about 8649.9228320257. The cubic root of 74821165 is about 421.3808763687.

The spelling of 74821165 in words is "seventy-four million, eight hundred twenty-one thousand, one hundred sixty-five".