74084561 has 16 divisors (see below), whose sum is σ = 77518848. Its totient is φ = 70761600.

The previous prime is 74084557. The next prime is 74084597. The reversal of 74084561 is 16548047.

It is a cyclic number.

It is not a de Polignac number, because 74084561 - 2² = 74084557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74084161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565466 + ... + 565596.

It is an arithmetic number, because the mean of its divisors is an integer number (4844928).

Almost surely, 2^74084561 is an apocalyptic number.

It is an amenable number.

74084561 is a deficient number, since it is larger than the sum of its proper divisors (3434287).

74084561 is a wasteful number, since it uses less digits than its factorization.

74084561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 74084561 is about 8607.2388720193. The cubic root of 74084561 is about 419.9935014112.

The spelling of 74084561 in words is "seventy-four million, eighty-four thousand, five hundred sixty-one".