2698668961 has 8 divisors (see below), whose sum is σ = 2859650784. Its totient is φ = 2537935680.

The previous prime is 2698668953. The next prime is 2698668989. The reversal of 2698668961 is 1698668962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2698668961 - 2³ = 2698668953 is a prime.

It is a super-2 number, since 2×2698668961² = 14565628322129639042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2698668961.

It is not an unprimeable number, because it can be changed into a prime (2698668901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39535 + ... + 83428.

It is an arithmetic number, because the mean of its divisors is an integer number (357456348).

Almost surely, 2^2698668961 is an apocalyptic number.

It is an amenable number.

2698668961 is a deficient number, since it is larger than the sum of its proper divisors (160981823).

2698668961 is a wasteful number, since it uses less digits than its factorization.

2698668961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124271.

The product of its digits is 13436928, while the sum is 61.

The square root of 2698668961 is about 51948.7147194230. The cubic root of 2698668961 is about 1392.2477926296.

Subtracting from 2698668961 its reverse (1698668962), we obtain a palindrome (999999999).

The spelling of 2698668961 in words is "two billion, six hundred ninety-eight million, six hundred sixty-eight thousand, nine hundred sixty-one".