732681 has 6 divisors (see below), whose sum is σ = 1058330. Its totient is φ = 488448.

The previous prime is 732673. The next prime is 732689. The reversal of 732681 is 186237.

It is an interprime number because it is at equal distance from previous prime (732673) and next prime (732689).

It can be written as a sum of positive squares in only one way, i.e., 585225 + 147456 = 765^2 + 384^2 .

It is not a de Polignac number, because 732681 - 2³ = 732673 is a prime.

It is a super-2 number, since 2×732681² = 1073642895522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (732689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40696 + ... + 40713.

2⁷³²⁶⁸¹ is an apocalyptic number.

It is an amenable number.

732681 is a deficient number, since it is larger than the sum of its proper divisors (325649).

732681 is a wasteful number, since it uses less digits than its factorization.

732681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81415 (or 81412 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 732681 is about 855.9678732289. The cubic root of 732681 is about 90.1512272316.

The spelling of 732681 in words is "seven hundred thirty-two thousand, six hundred eighty-one".