653443 has 8 divisors (see below), whose sum is σ = 751712. Its totient is φ = 556416.

The previous prime is 653431. The next prime is 653461. The reversal of 653443 is 344356.

653443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 653443 - 2⁹ = 652931 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 5⁷ + 4⁹ + 3⁷ + 4⁹ + 3⁷ .

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (653473) 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, 1771 + ... + 2107.

It is an arithmetic number, because the mean of its divisors is an integer number (93964).

2⁶⁵³⁴⁴³ is an apocalyptic number.

653443 is a deficient number, since it is larger than the sum of its proper divisors (98269).

653443 is a wasteful number, since it uses less digits than its factorization.

653443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its digits is 4320, while the sum is 25.

The square root of 653443 is about 808.3582126755. The cubic root of 653443 is about 86.7765880072.

Adding to 653443 its reverse (344356), we get a palindrome (997799).

The spelling of 653443 in words is "six hundred fifty-three thousand, four hundred forty-three".