653426321 has 4 divisors (see below), whose sum is σ = 687817200. Its totient is φ = 619035444.

The previous prime is 653426317. The next prime is 653426353. The reversal of 653426321 is 123624356.

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 653426321 - 2² = 653426317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653422321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17195411 + ... + 17195448.

It is an arithmetic number, because the mean of its divisors is an integer number (171954300).

Almost surely, 2^653426321 is an apocalyptic number.

It is an amenable number.

653426321 is a deficient number, since it is larger than the sum of its proper divisors (34390879).

653426321 is a wasteful number, since it uses less digits than its factorization.

653426321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34390878.

The product of its digits is 25920, while the sum is 32.

The square root of 653426321 is about 25562.2049322823. The cubic root of 653426321 is about 867.7584968265.

The spelling of 653426321 in words is "six hundred fifty-three million, four hundred twenty-six thousand, three hundred twenty-one".