740217 has 4 divisors (see below), whose sum is σ = 986960. Its totient is φ = 493476.

The previous prime is 740191. The next prime is 740227. The reversal of 740217 is 712047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 740217 - 2⁶ = 740153 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 740193 and 740202.

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 3 ways as a sum of consecutive naturals, for example, 123367 + ... + 123372.

It is an arithmetic number, because the mean of its divisors is an integer number (246740).

2⁷⁴⁰²¹⁷ is an apocalyptic number.

It is an amenable number.

740217 is a deficient number, since it is larger than the sum of its proper divisors (246743).

740217 is a wasteful number, since it uses less digits than its factorization.

740217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246742.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 740217 is about 860.3586461471. The cubic root of 740217 is about 90.4592574256.

The spelling of 740217 in words is "seven hundred forty thousand, two hundred seventeen", and thus it is an iban number.