74380087 has 4 divisors (see below), whose sum is σ = 75075336. Its totient is φ = 73684840.

The previous prime is 74380081. The next prime is 74380093. The reversal of 74380087 is 78008347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78008347 = 29 ⋅2689943.

It is an interprime number because it is at equal distance from previous prime (74380081) and next prime (74380093).

It is a cyclic number.

It is not a de Polignac number, because 74380087 - 2¹¹ = 74378039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74380081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347464 + ... + 347677.

It is an arithmetic number, because the mean of its divisors is an integer number (18768834).

Almost surely, 2^74380087 is an apocalyptic number.

74380087 is a deficient number, since it is larger than the sum of its proper divisors (695249).

74380087 is a wasteful number, since it uses less digits than its factorization.

74380087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695248.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 74380087 is about 8624.3890798131. The cubic root of 74380087 is about 420.5512169199.

The spelling of 74380087 in words is "seventy-four million, three hundred eighty thousand, eighty-seven".