731485 has 4 divisors (see below), whose sum is σ = 877788. Its totient is φ = 585184.

The previous prime is 731483. The next prime is 731501. The reversal of 731485 is 584137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584137 = 17 ⋅34361.

It can be written as a sum of positive squares in 2 ways, for example, as 133956 + 597529 = 366^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 731485 - 2¹ = 731483 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 (731483) 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, 73144 + ... + 73153.

It is an arithmetic number, because the mean of its divisors is an integer number (219447).

2⁷³¹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

731485 is a deficient number, since it is larger than the sum of its proper divisors (146303).

731485 is a wasteful number, since it uses less digits than its factorization.

731485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146302.

The product of its digits is 3360, while the sum is 28.

The square root of 731485 is about 855.2689635430. The cubic root of 731485 is about 90.1021473963.

It can be divided in two parts, 73148 and 5, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 731485 in words is "seven hundred thirty-one thousand, four hundred eighty-five".