74216347 has 4 divisors (see below), whose sum is σ = 74783016. Its totient is φ = 73649680.

The previous prime is 74216309. The next prime is 74216353. The reversal of 74216347 is 74361247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74216347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74216447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283138 + ... + 283399.

It is an arithmetic number, because the mean of its divisors is an integer number (18695754).

Almost surely, 2^74216347 is an apocalyptic number.

74216347 is a deficient number, since it is larger than the sum of its proper divisors (566669).

74216347 is a wasteful number, since it uses less digits than its factorization.

74216347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566668.

The product of its digits is 28224, while the sum is 34.

The square root of 74216347 is about 8614.8910033732. The cubic root of 74216347 is about 420.2423903192.

The spelling of 74216347 in words is "seventy-four million, two hundred sixteen thousand, three hundred forty-seven".