74563785 has 48 divisors (see below), whose sum is σ = 141607440. Its totient is φ = 36126720.

The previous prime is 74563781. The next prime is 74563807. The reversal of 74563785 is 58736547.

74563785 is a `hidden beast` number, since 7 + 4 + 5 + 637 + 8 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3549456 + 71014329 = 1884^2 + 8427^2 .

It is not a de Polignac number, because 74563785 - 2² = 74563781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74563785.

It is not an unprimeable number, because it can be changed into a prime (74563781) 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 47 ways as a sum of consecutive naturals, for example, 20505 + ... + 23865.

It is an arithmetic number, because the mean of its divisors is an integer number (2950155).

Almost surely, 2^74563785 is an apocalyptic number.

It is an amenable number.

74563785 is a deficient number, since it is larger than the sum of its proper divisors (67043655).

74563785 is a wasteful number, since it uses less digits than its factorization.

74563785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418 (or 3415 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 74563785 is about 8635.0324261117. The cubic root of 74563785 is about 420.8971468981.

The spelling of 74563785 in words is "seventy-four million, five hundred sixty-three thousand, seven hundred eighty-five".