653430969 has 20 divisors (see below), whose sum is σ = 987091380. Its totient is φ = 430721280.

The previous prime is 653430941. The next prime is 653430971. The reversal of 653430969 is 969034356.

It is a happy number.

653430969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 354832569 + 298598400 = 18837^2 + 17280^2 .

It is not a de Polignac number, because 653430969 - 2⁹ = 653430457 is a prime.

It is a super-2 number, since 2×653430969² = 853944062496557922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (653430979) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38112 + ... + 52529.

It is an arithmetic number, because the mean of its divisors is an integer number (49354569).

Almost surely, 2^653430969 is an apocalyptic number.

It is an amenable number.

653430969 is a deficient number, since it is larger than the sum of its proper divisors (333660411).

653430969 is an equidigital number, since it uses as much as digits as its factorization.

653430969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90742 (or 90733 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 653430969 is about 25562.2958475955. The cubic root of 653430969 is about 867.7605543560.

The spelling of 653430969 in words is "six hundred fifty-three million, four hundred thirty thousand, nine hundred sixty-nine".