740497 has 4 divisors (see below), whose sum is σ = 764416. Its totient is φ = 716580.

The previous prime is 740483. The next prime is 740513. The reversal of 740497 is 794047.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 23887 = 740497 / (7 + 4 + 0 + 4 + 9 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740477) 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, 11913 + ... + 11974.

It is an arithmetic number, because the mean of its divisors is an integer number (191104).

2⁷⁴⁰⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

740497 is a deficient number, since it is larger than the sum of its proper divisors (23919).

740497 is a wasteful number, since it uses less digits than its factorization.

740497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23918.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 740497 is about 860.5213535991. The cubic root of 740497 is about 90.4706619187.

It can be divided in two parts, 7 and 40497, that added together give a palindrome (40504).

The spelling of 740497 in words is "seven hundred forty thousand, four hundred ninety-seven".