537681 has 8 divisors (see below), whose sum is σ = 754720. Its totient is φ = 339552.

The previous prime is 537679. The next prime is 537703. The reversal of 537681 is 186735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 537681 - 2¹ = 537679 is a prime.

It is a super-2 number, since 2×537681² = 578201715522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4660 + ... + 4773.

It is an arithmetic number, because the mean of its divisors is an integer number (94340).

2⁵³⁷⁶⁸¹ is an apocalyptic number.

It is an amenable number.

537681 is a deficient number, since it is larger than the sum of its proper divisors (217039).

537681 is a wasteful number, since it uses less digits than its factorization.

537681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455.

The product of its digits is 5040, while the sum is 30.

The square root of 537681 is about 733.2673455159. The cubic root of 537681 is about 81.3157920755.

The spelling of 537681 in words is "five hundred thirty-seven thousand, six hundred eighty-one".