2718681 has 8 divisors (see below), whose sum is σ = 4142784. Its totient is φ = 1553520.

The previous prime is 2718679. The next prime is 2718713. The reversal of 2718681 is 1868172.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2718681 - 2¹ = 2718679 is a prime.

It is a super-2 number, since 2×2718681² = 14782452759522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2718601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64710 + ... + 64751.

It is an arithmetic number, because the mean of its divisors is an integer number (517848).

2^2718681 is an apocalyptic number.

2718681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2718681 is a deficient number, since it is larger than the sum of its proper divisors (1424103).

2718681 is a wasteful number, since it uses less digits than its factorization.

2718681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129471.

The product of its digits is 5376, while the sum is 33.

The square root of 2718681 is about 1648.8423211454. The cubic root of 2718681 is about 139.5680735577.

The spelling of 2718681 in words is "two million, seven hundred eighteen thousand, six hundred eighty-one".