512644 has 24 divisors (see below), whose sum is σ = 999936. Its totient is φ = 228000.

The previous prime is 512641. The next prime is 512657. The reversal of 512644 is 446215.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (512641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2589 + ... + 2779.

It is an arithmetic number, because the mean of its divisors is an integer number (41664).

2⁵¹²⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

512644 is a deficient number, since it is larger than the sum of its proper divisors (487292).

512644 is a wasteful number, since it uses less digits than its factorization.

512644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 265 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 512644 is about 715.9916200627. The cubic root of 512644 is about 80.0335276134.

Adding to 512644 its reverse (446215), we get a palindrome (958859).

It can be divided in two parts, 512 and 644, that added together give a square (1156 = 34²).

The spelling of 512644 in words is "five hundred twelve thousand, six hundred forty-four".