537689 has 4 divisors (see below), whose sum is σ = 556260. Its totient is φ = 519120.

The previous prime is 537679. The next prime is 537703. The reversal of 537689 is 986735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 986735 = 5 ⋅197347.

It can be written as a sum of positive squares in 2 ways, for example, as 267289 + 270400 = 517^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 537689 - 2⁴ = 537673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537679) 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, 9242 + ... + 9299.

It is an arithmetic number, because the mean of its divisors is an integer number (139065).

2⁵³⁷⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

537689 is a deficient number, since it is larger than the sum of its proper divisors (18571).

537689 is a wasteful number, since it uses less digits than its factorization.

537689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18570.

The product of its digits is 45360, while the sum is 38.

The square root of 537689 is about 733.2728005320. The cubic root of 537689 is about 81.3161953648.

The spelling of 537689 in words is "five hundred thirty-seven thousand, six hundred eighty-nine".