74075681 has 8 divisors (see below), whose sum is σ = 79129224. Its totient is φ = 69099520.

The previous prime is 74075641. The next prime is 74075707. The reversal of 74075681 is 18657047.

It can be written as a sum of positive squares in 4 ways, for example, as 390625 + 73685056 = 625^2 + 8584^2 .

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 74075681 - 2²² = 69881377 is a prime.

It is a super-2 number, since 2×74075681² = 10974413031227522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74075641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17360 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (9891153).

Almost surely, 2^74075681 is an apocalyptic number.

It is an amenable number.

74075681 is a deficient number, since it is larger than the sum of its proper divisors (5053543).

74075681 is a wasteful number, since it uses less digits than its factorization.

74075681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38691.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 74075681 is about 8606.7230116927. The cubic root of 74075681 is about 419.9767201760.

The spelling of 74075681 in words is "seventy-four million, seventy-five thousand, six hundred eighty-one".