740879 has 4 divisors (see below), whose sum is σ = 748176. Its totient is φ = 733584.

The previous prime is 740849. The next prime is 740891. The reversal of 740879 is 978047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978047 = 7 ⋅139721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3494 + ... + 3699.

It is an arithmetic number, because the mean of its divisors is an integer number (187044).

2⁷⁴⁰⁸⁷⁹ is an apocalyptic number.

740879 is a deficient number, since it is larger than the sum of its proper divisors (7297).

740879 is a wasteful number, since it uses less digits than its factorization.

740879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7296.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 740879 is about 860.7432834475. The cubic root of 740879 is about 90.4862162702.

The spelling of 740879 in words is "seven hundred forty thousand, eight hundred seventy-nine".