653629 has 4 divisors (see below), whose sum is σ = 667584. Its totient is φ = 639676.

The previous prime is 653623. The next prime is 653641. The reversal of 653629 is 926356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 653629 - 2³ = 653621 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

653629 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 653629.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 653629.

It is not an unprimeable number, because it can be changed into a prime (653621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6907 + ... + 7000.

It is an arithmetic number, because the mean of its divisors is an integer number (166896).

2⁶⁵³⁶²⁹ is an apocalyptic number.

It is an amenable number.

653629 is a deficient number, since it is larger than the sum of its proper divisors (13955).

653629 is a wasteful number, since it uses less digits than its factorization.

653629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13954.

The product of its digits is 9720, while the sum is 31.

The square root of 653629 is about 808.4732524951. The cubic root of 653629 is about 86.7848207652.

It can be divided in two parts, 6 and 53629, that added together give a palindrome (53635).

The spelling of 653629 in words is "six hundred fifty-three thousand, six hundred twenty-nine".