74512 has 10 divisors (see below), whose sum is σ = 144398. Its totient is φ = 37248.

The previous prime is 74509. The next prime is 74521. The reversal of 74512 is 21547.

It can be written as a sum of positive squares in only one way, i.e., 50176 + 24336 = 224^2 + 156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74512.

It is an unprimeable 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, 2313 + ... + 2344.

2⁷⁴⁵¹² is an apocalyptic number.

It is an amenable number.

74512 is a deficient number, since it is larger than the sum of its proper divisors (69886).

74512 is a wasteful number, since it uses less digits than its factorization.

74512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665 (or 4659 counting only the distinct ones).

The product of its digits is 280, while the sum is 19.

The square root of 74512 is about 272.9688626932. The cubic root of 74512 is about 42.0799685793.

It can be divided in two parts, 745 and 12, that added together give a palindrome (757).

The spelling of 74512 in words is "seventy-four thousand, five hundred twelve".