74165636 has 6 divisors (see below), whose sum is σ = 129789870. Its totient is φ = 37082816.

The previous prime is 74165633. The next prime is 74165647. The reversal of 74165636 is 63656147.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74063236 + 102400 = 8606^2 + 320^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 74165636.

It is not an unprimeable number, because it can be changed into a prime (74165633) 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 as a sum of consecutive naturals, namely, 9270701 + ... + 9270708.

It is an arithmetic number, because the mean of its divisors is an integer number (21631645).

Almost surely, 2^74165636 is an apocalyptic number.

It is an amenable number.

74165636 is a deficient number, since it is larger than the sum of its proper divisors (55624234).

74165636 is a wasteful number, since it uses less digits than its factorization.

74165636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541413 (or 18541411 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 74165636 is about 8611.9472826998. The cubic root of 74165636 is about 420.1466532460.

The spelling of 74165636 in words is "seventy-four million, one hundred sixty-five thousand, six hundred thirty-six".