74287 has 2 divisors, whose sum is σ = 74288. Its totient is φ = 74286.

The previous prime is 74279. The next prime is 74293. The reversal of 74287 is 78247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74287 - 2³ = 74279 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37143 + 37144.

It is an arithmetic number, because the mean of its divisors is an integer number (37144).

2⁷⁴²⁸⁷ is an apocalyptic number.

74287 is a deficient number, since it is larger than the sum of its proper divisors (1).

74287 is an equidigital number, since it uses as much as digits as its factorization.

74287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 28.

The square root of 74287 is about 272.5564161784. The cubic root of 74287 is about 42.0375703126.

It can be divided in two parts, 74 and 287, that added together give a square (361 = 19²).

The spelling of 74287 in words is "seventy-four thousand, two hundred eighty-seven".