2686669830 has 128 divisors (see below), whose sum is σ = 7775792640. Its totient is φ = 656173440.

The previous prime is 2686669829. The next prime is 2686669837. The reversal of 2686669830 is 389666862.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686669837) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 456889 + ... + 462731.

It is an arithmetic number, because the mean of its divisors is an integer number (60748380).

Almost surely, 2^2686669830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2686669830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3887896320).

2686669830 is an abundant number, since it is smaller than the sum of its proper divisors (5089122810).

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

2686669830 is a wasteful number, since it uses less digits than its factorization.

2686669830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003 (or 5997 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The square root of 2686669830 is about 51833.0958944187. The cubic root of 2686669830 is about 1390.1812695984.

The spelling of 2686669830 in words is "two billion, six hundred eighty-six million, six hundred sixty-nine thousand, eight hundred thirty".