74818 has 4 divisors (see below), whose sum is σ = 112230. Its totient is φ = 37408.

The previous prime is 74797. The next prime is 74821. The reversal of 74818 is 81847.

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

It can be written as a sum of positive squares in only one way, i.e., 74529 + 289 = 273^2 + 17^2 .

It is an unprimeable number.

74818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18703 + ... + 18706.

2⁷⁴⁸¹⁸ is an apocalyptic number.

74818 is a deficient number, since it is larger than the sum of its proper divisors (37412).

74818 is a wasteful number, since it uses less digits than its factorization.

74818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37411.

The product of its digits is 1792, while the sum is 28.

The square root of 74818 is about 273.5287919032. The cubic root of 74818 is about 42.1374934693.

The spelling of 74818 in words is "seventy-four thousand, eight hundred eighteen".