537640 has 16 divisors (see below), whose sum is σ = 1209780. Its totient is φ = 215040.

The previous prime is 537637. The next prime is 537661. The reversal of 537640 is 46735.

It can be written as a sum of positive squares in 2 ways, for example, as 498436 + 39204 = 706^2 + 198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6681 + ... + 6760.

2⁵³⁷⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

537640 is an abundant number, since it is smaller than the sum of its proper divisors (672140).

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

537640 is a wasteful number, since it uses less digits than its factorization.

537640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13452 (or 13448 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 537640 is about 733.2393879218. The cubic root of 537640 is about 81.3137251546.

The spelling of 537640 in words is "five hundred thirty-seven thousand, six hundred forty".