740491 has 4 divisors (see below), whose sum is σ = 743184. Its totient is φ = 737800.

The previous prime is 740483. The next prime is 740513. The reversal of 740491 is 194047.

740491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 740491 - 2³ = 740483 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (740461) 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, 880 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (185796).

2⁷⁴⁰⁴⁹¹ is an apocalyptic number.

740491 is a deficient number, since it is larger than the sum of its proper divisors (2693).

740491 is a wasteful number, since it uses less digits than its factorization.

740491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 740491 is about 860.5178673334. The cubic root of 740491 is about 90.4704175669.

The spelling of 740491 in words is "seven hundred forty thousand, four hundred ninety-one".