2681701686 has 96 divisors (see below), whose sum is σ = 6685286400. Its totient is φ = 771275520.

The previous prime is 2681701661. The next prime is 2681701723. The reversal of 2681701686 is 6861071862.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172795 + ... + 187673.

It is an arithmetic number, because the mean of its divisors is an integer number (69638400).

Almost surely, 2^2681701686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2681701686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3342643200).

2681701686 is an abundant number, since it is smaller than the sum of its proper divisors (4003584714).

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

2681701686 is a wasteful number, since it uses less digits than its factorization.

2681701686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14954 (or 14951 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 2681701686 is about 51785.1492804646. The cubic root of 2681701686 is about 1389.3238410405.

The spelling of 2681701686 in words is "two billion, six hundred eighty-one million, seven hundred one thousand, six hundred eighty-six".