653466969 has 9 divisors (see below), whose sum is σ = 944007519. Its totient is φ = 435593520.

The previous prime is 653466959. The next prime is 653466971. The reversal of 653466969 is 969664356.

It is a happy number.

The square root of 653466969 is 25563.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 316377369 + 337089600 = 17787^2 + 18360^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 653466969 - 2⁷ = 653466841 is a prime.

It is a super-2 number, since 2×653466969² = 854038159148093922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (653466929) 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 8 ways as a sum of consecutive naturals, for example, 72429 + ... + 80949.

Almost surely, 2^653466969 is an apocalyptic number.

653466969 is the 25563-rd square number.

653466969 is the 12782-nd centered octagonal number.

It is an amenable number.

653466969 is a deficient number, since it is larger than the sum of its proper divisors (290540550).

653466969 is an frugal number, since it uses more digits than its factorization.

653466969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17048 (or 8524 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The cubic root of 653466969 is about 867.7764901410.

The spelling of 653466969 in words is "six hundred fifty-three million, four hundred sixty-six thousand, nine hundred sixty-nine".