7664774669 has 2 divisors, whose sum is σ = 7664774670. Its totient is φ = 7664774668.

The previous prime is 7664774651. The next prime is 7664774671. The reversal of 7664774669 is 9664774667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7526430025 + 138344644 = 86755^2 + 11762^2 .

It is a cyclic number.

It is not a de Polignac number, because 7664774669 - 2⁸ = 7664774413 is a prime.

It is a super-2 number, since 2×7664774669² (a number of 21 digits) contains 22 as substring.

Together with 7664774671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7664174669) 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, 3832387334 + 3832387335.

It is an arithmetic number, because the mean of its divisors is an integer number (3832387335).

Almost surely, 2^7664774669 is an apocalyptic number.

It is an amenable number.

7664774669 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664774669 is an equidigital number, since it uses as much as digits as its factorization.

7664774669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64012032, while the sum is 62.

The square root of 7664774669 is about 87548.6988424157. The cubic root of 7664774669 is about 1971.6650158659.

The spelling of 7664774669 in words is "seven billion, six hundred sixty-four million, seven hundred seventy-four thousand, six hundred sixty-nine".