74811601 has 4 divisors (see below), whose sum is σ = 75244212. Its totient is φ = 74378992.

The previous prime is 74811557. The next prime is 74811613. The reversal of 74811601 is 10611847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67650625 + 7160976 = 8225^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 74811601 - 2⁹ = 74811089 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 74811601.

It is not an unprimeable number, because it can be changed into a prime (74811631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216046 + ... + 216391.

It is an arithmetic number, because the mean of its divisors is an integer number (18811053).

Almost surely, 2^74811601 is an apocalyptic number.

It is an amenable number.

74811601 is a deficient number, since it is larger than the sum of its proper divisors (432611).

74811601 is a wasteful number, since it uses less digits than its factorization.

74811601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432610.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 74811601 is about 8649.3699770561. The cubic root of 74811601 is about 421.3629212957.

The spelling of 74811601 in words is "seventy-four million, eight hundred eleven thousand, six hundred one".