2690684840 has 48 divisors (see below), whose sum is σ = 6095079900. Its totient is φ = 1069026816.

The previous prime is 2690684837. The next prime is 2690684869. The reversal of 2690684840 is 484860962.

It can be written as a sum of positive squares in 6 ways, for example, as 1379231044 + 1311453796 = 37138^2 + 36214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 984596 + ... + 987324.

Almost surely, 2^2690684840 is an apocalyptic number.

2690684840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2690684840 is an abundant number, since it is smaller than the sum of its proper divisors (3404395060).

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

2690684840 is a wasteful number, since it uses less digits than its factorization.

2690684840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 2893 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 2690684840 is about 51871.8116128596. The cubic root of 2690684840 is about 1390.8734292789.

The spelling of 2690684840 in words is "two billion, six hundred ninety million, six hundred eighty-four thousand, eight hundred forty".