74722747 has 4 divisors (see below), whose sum is σ = 81515736. Its totient is φ = 67929760.

The previous prime is 74722723. The next prime is 74722751.

It is a happy number.

74722747 is nontrivially palindromic in base 10.

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-74722747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74722757) 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, 3396478 + ... + 3396499.

It is an arithmetic number, because the mean of its divisors is an integer number (20378934).

Almost surely, 2^74722747 is an apocalyptic number.

74722747 is a deficient number, since it is larger than the sum of its proper divisors (6792989).

74722747 is a wasteful number, since it uses less digits than its factorization.

74722747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792988.

The product of its digits is 153664, while the sum is 40.

The square root of 74722747 is about 8644.2320075296. The cubic root of 74722747 is about 421.1960371371.

The spelling of 74722747 in words is "seventy-four million, seven hundred twenty-two thousand, seven hundred forty-seven".