3862687687685 has 24 divisors (see below), whose sum is σ = 5071311588888. Its totient is φ = 2814557952000.

The previous prime is 3862687687681. The next prime is 3862687687723. The reversal of 3862687687685 is 5867867862683.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 391777098241 + 3470910589444 = 625921^2 + 1863038^2 .

It is not a de Polignac number, because 3862687687685 - 2² = 3862687687681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3862687687681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23562116 + ... + 23725485.

It is an arithmetic number, because the mean of its divisors is an integer number (211304649537).

Almost surely, 2^{3862687687685} is an apocalyptic number.

It is an amenable number.

3862687687685 is a deficient number, since it is larger than the sum of its proper divisors (1208623901203).

3862687687685 is a wasteful number, since it uses less digits than its factorization.

3862687687685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47287685 (or 47287654 counting only the distinct ones).

The product of its digits is 7803371520, while the sum is 80.

The spelling of 3862687687685 in words is "three trillion, eight hundred sixty-two billion, six hundred eighty-seven million, six hundred eighty-seven thousand, six hundred eighty-five".