74987 has 8 divisors (see below), whose sum is σ = 86832. Its totient is φ = 64000.

The previous prime is 74959. The next prime is 75011. The reversal of 74987 is 78947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74987 - 2⁶ = 74923 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14 + ... + 387.

It is an arithmetic number, because the mean of its divisors is an integer number (10854).

2⁷⁴⁹⁸⁷ is an apocalyptic number.

74987 is a deficient number, since it is larger than the sum of its proper divisors (11845).

74987 is a wasteful number, since it uses less digits than its factorization.

74987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its digits is 14112, while the sum is 35.

The square root of 74987 is about 273.8375430798. The cubic root of 74987 is about 42.1691965410.

It can be divided in two parts, 7 and 4987, that added together give a palindrome (4994).

The spelling of 74987 in words is "seventy-four thousand, nine hundred eighty-seven".