740213 has 4 divisors (see below), whose sum is σ = 748620. Its totient is φ = 731808.

The previous prime is 740191. The next prime is 740227. The reversal of 740213 is 312047.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 487204 + 253009 = 698^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 740213 - 2⁸ = 739957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 740191 and 740200.

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 740213.

It is not an unprimeable number, because it can be changed into a prime (740513) 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, 4070 + ... + 4247.

It is an arithmetic number, because the mean of its divisors is an integer number (187155).

2⁷⁴⁰²¹³ is an apocalyptic number.

It is an amenable number.

740213 is a deficient number, since it is larger than the sum of its proper divisors (8407).

740213 is an equidigital number, since it uses as much as digits as its factorization.

740213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 740213 is about 860.3563215320. The cubic root of 740213 is about 90.4590944834.

The spelling of 740213 in words is "seven hundred forty thousand, two hundred thirteen".