2686836745 has 8 divisors (see below), whose sum is σ = 3226431816. Its totient is φ = 2147984256.

The previous prime is 2686836709. The next prime is 2686836751. The reversal of 2686836745 is 5476386862.

It can be written as a sum of positive squares in 4 ways, for example, as 1919491344 + 767345401 = 43812^2 + 27701^2 .

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 2686836745 - 2⁷ = 2686836617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177652 + ... + 192181.

It is an arithmetic number, because the mean of its divisors is an integer number (403303977).

Almost surely, 2^2686836745 is an apocalyptic number.

It is an amenable number.

2686836745 is a deficient number, since it is larger than the sum of its proper divisors (539595071).

2686836745 is a wasteful number, since it uses less digits than its factorization.

2686836745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371291.

The product of its digits is 11612160, while the sum is 55.

The square root of 2686836745 is about 51834.7059893273. The cubic root of 2686836745 is about 1390.2100583116.

The spelling of 2686836745 in words is "two billion, six hundred eighty-six million, eight hundred thirty-six thousand, seven hundred forty-five".