740287 has 2 divisors, whose sum is σ = 740288. Its totient is φ = 740286.

The previous prime is 740279. The next prime is 740303. The reversal of 740287 is 782047.

740287 is nontrivially palindromic in base 9.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 740287 - 2³ = 740279 is a prime.

740287 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370143 + 370144.

It is an arithmetic number, because the mean of its divisors is an integer number (370144).

2⁷⁴⁰²⁸⁷ is an apocalyptic number.

740287 is a deficient number, since it is larger than the sum of its proper divisors (1).

740287 is an equidigital number, since it uses as much as digits as its factorization.

740287 is an evil number, because the sum of its binary digits is even.

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

The square root of 740287 is about 860.3993258947. The cubic root of 740287 is about 90.4621088184.

The spelling of 740287 in words is "seven hundred forty thousand, two hundred eighty-seven".