74003987 has 4 divisors (see below), whose sum is σ = 74227896. Its totient is φ = 73780080.

The previous prime is 74003983. The next prime is 74004023. The reversal of 74003987 is 78930047.

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

It is a cyclic number.

It is not a de Polignac number, because 74003987 - 2² = 74003983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74003987.

It is not an unprimeable number, because it can be changed into a prime (74003981) 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, 111458 + ... + 112119.

It is an arithmetic number, because the mean of its divisors is an integer number (18556974).

Almost surely, 2^74003987 is an apocalyptic number.

74003987 is a deficient number, since it is larger than the sum of its proper divisors (223909).

74003987 is a wasteful number, since it uses less digits than its factorization.

74003987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223908.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 74003987 is about 8602.5570035891. The cubic root of 74003987 is about 419.8411852308.

The spelling of 74003987 in words is "seventy-four million, three thousand, nine hundred eighty-seven".