2740686 has 32 divisors (see below), whose sum is σ = 6054048. Its totient is φ = 821760.

The previous prime is 2740667. The next prime is 2740721. The reversal of 2740686 is 6860472.

It is a super-2 number, since 2×2740686² = 15022719501192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2770 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (189189).

2^2740686 is an apocalyptic number.

2740686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2740686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3027024).

2740686 is an abundant number, since it is smaller than the sum of its proper divisors (3313362).

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

2740686 is a wasteful number, since it uses less digits than its factorization.

2740686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 2740686 is about 1655.5017366345. The cubic root of 2740686 is about 139.9436167512.

The spelling of 2740686 in words is "two million, seven hundred forty thousand, six hundred eighty-six".