7040686169 has 12 divisors (see below), whose sum is σ = 7741019748. Its totient is φ = 6398900640.

The previous prime is 7040686157. The next prime is 7040686171. The reversal of 7040686169 is 9616860407.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4262131225 + 2778554944 = 65285^2 + 52712^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7040686169 is a prime.

It is a super-2 number, since 2×7040686169² = 99142523460695793122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7040686199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 727607 + ... + 737219.

It is an arithmetic number, because the mean of its divisors is an integer number (645084979).

Almost surely, 2^7040686169 is an apocalyptic number.

It is an amenable number.

7040686169 is a deficient number, since it is larger than the sum of its proper divisors (700333579).

7040686169 is a wasteful number, since it uses less digits than its factorization.

7040686169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15688 (or 15677 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 7040686169 is about 83908.7967319279. The cubic root of 7040686169 is about 1916.6302082979.

The spelling of 7040686169 in words is "seven billion, forty million, six hundred eighty-six thousand, one hundred sixty-nine".