74216445 has 8 divisors (see below), whose sum is σ = 118746336. Its totient is φ = 39582096.

The previous prime is 74216411. The next prime is 74216447. The reversal of 74216445 is 54461247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74216445 - 2⁸ = 74216189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74216447) 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 7 ways as a sum of consecutive naturals, for example, 2473867 + ... + 2473896.

It is an arithmetic number, because the mean of its divisors is an integer number (14843292).

Almost surely, 2^74216445 is an apocalyptic number.

It is an amenable number.

74216445 is a deficient number, since it is larger than the sum of its proper divisors (44529891).

74216445 is a wasteful number, since it uses less digits than its factorization.

74216445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947771.

The product of its digits is 26880, while the sum is 33.

The square root of 74216445 is about 8614.8966911972. The cubic root of 74216445 is about 420.2425752907.

The spelling of 74216445 in words is "seventy-four million, two hundred sixteen thousand, four hundred forty-five".