537643 has 4 divisors (see below), whose sum is σ = 565960. Its totient is φ = 509328.

The previous prime is 537637. The next prime is 537661. The reversal of 537643 is 346735.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 537643 - 2⁵ = 537611 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (537673) 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, 14130 + ... + 14167.

It is an arithmetic number, because the mean of its divisors is an integer number (141490).

2⁵³⁷⁶⁴³ is an apocalyptic number.

537643 is a deficient number, since it is larger than the sum of its proper divisors (28317).

537643 is a wasteful number, since it uses less digits than its factorization.

537643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28316.

The product of its digits is 7560, while the sum is 28.

The square root of 537643 is about 733.2414336356. The cubic root of 537643 is about 81.3138763963.

The spelling of 537643 in words is "five hundred thirty-seven thousand, six hundred forty-three".