7645204817 has 2 divisors, whose sum is σ = 7645204818. Its totient is φ = 7645204816.

The previous prime is 7645204799. The next prime is 7645204829. The reversal of 7645204817 is 7184025467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7638934801 + 6270016 = 87401^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 7645204817 - 2²² = 7641010513 is a prime.

It is not a weakly prime, because it can be changed into another prime (7645204867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3822602408 + 3822602409.

It is an arithmetic number, because the mean of its divisors is an integer number (3822602409).

Almost surely, 2^7645204817 is an apocalyptic number.

It is an amenable number.

7645204817 is a deficient number, since it is larger than the sum of its proper divisors (1).

7645204817 is an equidigital number, since it uses as much as digits as its factorization.

7645204817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 7645204817 is about 87436.8618890225. The cubic root of 7645204817 is about 1969.9855545335.

The spelling of 7645204817 in words is "seven billion, six hundred forty-five million, two hundred four thousand, eight hundred seventeen".