74822643 has 16 divisors (see below), whose sum is σ = 126684160. Its totient is φ = 42755688.

The previous prime is 74822641. The next prime is 74822659. The reversal of 74822643 is 34622847.

74822643 is a `hidden beast` number, since 7 + 4 + 8 + 2 + 2 + 643 = 666.

It is not a de Polignac number, because 74822643 - 2¹ = 74822641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74822598 and 74822607.

It is not an unprimeable number, because it can be changed into a prime (74822641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197755 + ... + 198132.

It is an arithmetic number, because the mean of its divisors is an integer number (7917760).

Almost surely, 2^74822643 is an apocalyptic number.

74822643 is a deficient number, since it is larger than the sum of its proper divisors (51861517).

74822643 is a wasteful number, since it uses less digits than its factorization.

74822643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395903 (or 395897 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 74822643 is about 8650.0082658920. The cubic root of 74822643 is about 421.3836509705.

The spelling of 74822643 in words is "seventy-four million, eight hundred twenty-two thousand, six hundred forty-three".