653231669 has 2 divisors, whose sum is σ = 653231670. Its totient is φ = 653231668.

The previous prime is 653231591. The next prime is 653231713. The reversal of 653231669 is 966132356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 600495025 + 52736644 = 24505^2 + 7262^2 .

It is a cyclic number.

It is not a de Polignac number, because 653231669 - 2²⁴ = 636454453 is a prime.

It is a super-2 number, since 2×653231669² = 853423226769051122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653234669) 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 as a sum of consecutive naturals, namely, 326615834 + 326615835.

It is an arithmetic number, because the mean of its divisors is an integer number (326615835).

Almost surely, 2^653231669 is an apocalyptic number.

It is an amenable number.

653231669 is a deficient number, since it is larger than the sum of its proper divisors (1).

653231669 is an equidigital number, since it uses as much as digits as its factorization.

653231669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 41.

The square root of 653231669 is about 25558.3972306559. The cubic root of 653231669 is about 867.6723214885.

The spelling of 653231669 in words is "six hundred fifty-three million, two hundred thirty-one thousand, six hundred sixty-nine".