74055645 has 12 divisors (see below), whose sum is σ = 128363196. Its totient is φ = 39496320.

The previous prime is 74055637. The next prime is 74055721. The reversal of 74055645 is 54655047.

It is a happy number.

74055645 is a `hidden beast` number, since 7 + 4 + 0 + 5 + 5 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46744569 + 27311076 = 6837^2 + 5226^2 .

It is not a de Polignac number, because 74055645 - 2³ = 74055637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822796 + ... + 822885.

It is an arithmetic number, because the mean of its divisors is an integer number (10696933).

Almost surely, 2^74055645 is an apocalyptic number.

It is an amenable number.

74055645 is a deficient number, since it is larger than the sum of its proper divisors (54307551).

74055645 is a wasteful number, since it uses less digits than its factorization.

74055645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645692 (or 1645689 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 74055645 is about 8605.5589591845. The cubic root of 74055645 is about 419.9388516420.

The spelling of 74055645 in words is "seventy-four million, fifty-five thousand, six hundred forty-five".