74947 has 4 divisors (see below), whose sum is σ = 75600. Its totient is φ = 74296.

The previous prime is 74941. The next prime is 74959.

74947 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 74947 - 2¹⁵ = 42179 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103 + ... + 400.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

2⁷⁴⁹⁴⁷ is an apocalyptic number.

74947 is a deficient number, since it is larger than the sum of its proper divisors (653).

74947 is a wasteful number, since it uses less digits than its factorization.

74947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 7056, while the sum is 31.

The square root of 74947 is about 273.7644973330. The cubic root of 74947 is about 42.1616971617.

The spelling of 74947 in words is "seventy-four thousand, nine hundred forty-seven".