740247 has 8 divisors (see below), whose sum is σ = 992256. Its totient is φ = 490872.

The previous prime is 740237. The next prime is 740279. The reversal of 740247 is 742047.

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

It is not a de Polignac number, because 740247 - 2¹⁶ = 674711 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 740247.

It is not an unprimeable number, because it can be changed into a prime (740227) 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, 138 + ... + 1224.

It is an arithmetic number, because the mean of its divisors is an integer number (124032).

2⁷⁴⁰²⁴⁷ is an apocalyptic number.

740247 is a deficient number, since it is larger than the sum of its proper divisors (252009).

740247 is a wasteful number, since it uses less digits than its factorization.

740247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 740247 is about 860.3760805601. The cubic root of 740247 is about 90.4604794731.

The spelling of 740247 in words is "seven hundred forty thousand, two hundred forty-seven", and thus it is an iban number.