2686543620 has 24 divisors (see below), whose sum is σ = 7522322304. Its totient is φ = 716411616.

The previous prime is 2686543597. The next prime is 2686543633. The reversal of 2686543620 is 263456862.

It is a happy 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, 22387804 + ... + 22387923.

It is an arithmetic number, because the mean of its divisors is an integer number (313430096).

Almost surely, 2^2686543620 is an apocalyptic number.

2686543620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2686543620 is an abundant number, since it is smaller than the sum of its proper divisors (4835778684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2686543620 is a wasteful number, since it uses less digits than its factorization.

2686543620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44775739 (or 44775737 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 2686543620 is about 51831.8784147362. The cubic root of 2686543620 is about 1390.1595007003.

The spelling of 2686543620 in words is "two billion, six hundred eighty-six million, five hundred forty-three thousand, six hundred twenty".