74074 has 32 divisors (see below), whose sum is σ = 153216. Its totient is φ = 25920.

The previous prime is 74071. The next prime is 74077. The reversal of 74074 is 47047.

74074 = 77² + 78² + ... + 87².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74071) and next prime (74077).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74071) 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 15 ways as a sum of consecutive naturals, for example, 1984 + ... + 2020.

It is an arithmetic number, because the mean of its divisors is an integer number (4788).

2⁷⁴⁰⁷⁴ is an apocalyptic number.

74074 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

74074 is an abundant number, since it is smaller than the sum of its proper divisors (79142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76608).

74074 is a wasteful number, since it uses less digits than its factorization.

74074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 74074 is about 272.1653908931. The cubic root of 74074 is about 41.9973543307.

Adding to 74074 its reverse (47047), we get a palindrome (121121).

The spelling of 74074 in words is "seventy-four thousand, seventy-four", and thus it is an iban number.