537644 has 12 divisors (see below), whose sum is σ = 946344. Its totient is φ = 267264.

The previous prime is 537637. The next prime is 537661. The reversal of 537644 is 446735.

It is a super-2 number, since 2×537644² = 578122141472, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 767 + ... + 1289.

It is an arithmetic number, because the mean of its divisors is an integer number (78862).

2⁵³⁷⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

537644 is a deficient number, since it is larger than the sum of its proper divisors (408700).

537644 is a wasteful number, since it uses less digits than its factorization.

537644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 782 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 537644 is about 733.2421155389. The cubic root of 537644 is about 81.3139268101.

Subtracting from 537644 its reverse (446735), we obtain a palindrome (90909).

The spelling of 537644 in words is "five hundred thirty-seven thousand, six hundred forty-four".