731612 has 48 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 279552.

The previous prime is 731611. The next prime is 731623. The reversal of 731612 is 216137.

It is a happy number.

It is a super-2 number, since 2×731612² = 1070512237088, which contains 22 as substring.

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 731612.

It is not an unprimeable number, because it can be changed into a prime (731611) 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 15 ways as a sum of consecutive naturals, for example, 13778 + ... + 13830.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2⁷³¹⁶¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816480).

731612 is an abundant number, since it is smaller than the sum of its proper divisors (901348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731612 is a wasteful number, since it uses less digits than its factorization.

731612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 108 counting only the distinct ones).

The product of its digits is 252, while the sum is 20.

The square root of 731612 is about 855.3432059706. The cubic root of 731612 is about 90.1073615887.

Adding to 731612 its reverse (216137), we get a palindrome (947749).

The spelling of 731612 in words is "seven hundred thirty-one thousand, six hundred twelve".