2708686121 has 8 divisors (see below), whose sum is σ = 2786127624. Its totient is φ = 2631467520.

The previous prime is 2708686111. The next prime is 2708686133. The reversal of 2708686121 is 1216868072.

It can be written as a sum of positive squares in 4 ways, for example, as 2153424025 + 555262096 = 46405^2 + 23564^2 .

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 2708686121 - 2¹⁰ = 2708685097 is a prime.

It is a super-4 number, since 4×2708686121⁴ (a number of 39 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2708686111) 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, 30920 + ... + 79833.

It is an arithmetic number, because the mean of its divisors is an integer number (348265953).

Almost surely, 2^2708686121 is an apocalyptic number.

It is an amenable number.

2708686121 is a deficient number, since it is larger than the sum of its proper divisors (77441503).

2708686121 is a wasteful number, since it uses less digits than its factorization.

2708686121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111451.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 2708686121 is about 52045.0393505471. The cubic root of 2708686121 is about 1393.9682887710.

The spelling of 2708686121 in words is "two billion, seven hundred eight million, six hundred eighty-six thousand, one hundred twenty-one".