7798669 has 2 divisors, whose sum is σ = 7798670. Its totient is φ = 7798668.

The previous prime is 7798657. The next prime is 7798673. The reversal of 7798669 is 9668977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6441444 + 1357225 = 2538^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 7798669 - 2¹³ = 7790477 is a prime.

It is a super-2 number, since 2×7798669² = 121638476343122, which contains 22 as substring.

7798669 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7798619) 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, 3899334 + 3899335.

It is an arithmetic number, because the mean of its divisors is an integer number (3899335).

Almost surely, 2^7798669 is an apocalyptic number.

It is an amenable number.

7798669 is a deficient number, since it is larger than the sum of its proper divisors (1).

7798669 is an equidigital number, since it uses as much as digits as its factorization.

7798669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 52.

The square root of 7798669 is about 2792.6097113632. The cubic root of 7798669 is about 198.3079671597.

The spelling of 7798669 in words is "seven million, seven hundred ninety-eight thousand, six hundred sixty-nine".