653883321 has 16 divisors (see below), whose sum is σ = 1073039744. Its totient is φ = 344905344.

The previous prime is 653883319. The next prime is 653883337. The reversal of 653883321 is 123388356.

It is not a de Polignac number, because 653883321 - 2¹ = 653883319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 653883321.

It is not an unprimeable number, because it can be changed into a prime (653883311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197316 + ... + 1197861.

It is an arithmetic number, because the mean of its divisors is an integer number (67064984).

Almost surely, 2^653883321 is an apocalyptic number.

It is an amenable number.

653883321 is a deficient number, since it is larger than the sum of its proper divisors (419156423).

653883321 is a wasteful number, since it uses less digits than its factorization.

653883321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395200.

The product of its digits is 103680, while the sum is 39.

The square root of 653883321 is about 25571.1423483582. The cubic root of 653883321 is about 867.9607502940.

The spelling of 653883321 in words is "six hundred fifty-three million, eight hundred eighty-three thousand, three hundred twenty-one".