7664213269 has 2 divisors, whose sum is σ = 7664213270. Its totient is φ = 7664213268.

The previous prime is 7664213257. The next prime is 7664213299. The reversal of 7664213269 is 9623124667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4557600100 + 3106613169 = 67510^2 + 55737^2 .

It is a cyclic number.

It is not a de Polignac number, because 7664213269 - 2¹⁵ = 7664180501 is a prime.

It is a super-2 number, since 2×7664213269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7664213209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832106634 + 3832106635.

It is an arithmetic number, because the mean of its divisors is an integer number (3832106635).

Almost surely, 2^7664213269 is an apocalyptic number.

It is an amenable number.

7664213269 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664213269 is an equidigital number, since it uses as much as digits as its factorization.

7664213269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The square root of 7664213269 is about 87545.4925681500. The cubic root of 7664213269 is about 1971.6168770398.

The spelling of 7664213269 in words is "seven billion, six hundred sixty-four million, two hundred thirteen thousand, two hundred sixty-nine".