740587 has 4 divisors (see below), whose sum is σ = 742456. Its totient is φ = 738720.

The previous prime is 740581. The next prime is 740591. The reversal of 740587 is 785047.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785047 = 71 ⋅11057.

It is a cyclic number.

It is not a de Polignac number, because 740587 - 2¹¹ = 738539 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740581) 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, 78 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (185614).

2⁷⁴⁰⁵⁸⁷ is an apocalyptic number.

740587 is a deficient number, since it is larger than the sum of its proper divisors (1869).

740587 is a wasteful number, since it uses less digits than its factorization.

740587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 740587 is about 860.5736458898. The cubic root of 740587 is about 90.4743270381.

The spelling of 740587 in words is "seven hundred forty thousand, five hundred eighty-seven".