8278960669 has 6 divisors (see below), whose sum is σ = 9630627774. Its totient is φ = 7096251960.

The previous prime is 8278960661. The next prime is 8278960741. The reversal of 8278960669 is 9660698728.

It can be written as a sum of positive squares in only one way, i.e., 6928398169 + 1350562500 = 83237^2 + 36750^2 .

It is not a de Polignac number, because 8278960669 - 2³ = 8278960661 is a prime.

It is a super-2 number, since 2×8278960669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8278960661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84479142 + ... + 84479239.

It is an arithmetic number, because the mean of its divisors is an integer number (1605104629).

Almost surely, 2^8278960669 is an apocalyptic number.

It is an amenable number.

8278960669 is a deficient number, since it is larger than the sum of its proper divisors (1351667105).

8278960669 is a wasteful number, since it uses less digits than its factorization.

8278960669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168958395 (or 168958388 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 61.

The square root of 8278960669 is about 90988.7941946699. The cubic root of 8278960669 is about 2022.9816331949.

The spelling of 8278960669 in words is "eight billion, two hundred seventy-eight million, nine hundred sixty thousand, six hundred sixty-nine".