2715981 has 8 divisors (see below), whose sum is σ = 3655584. Its totient is φ = 1793520.

The previous prime is 2715961. The next prime is 2715983. The reversal of 2715981 is 1895172.

2715981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2715981 - 2⁵ = 2715949 is a prime.

It is a super-2 number, since 2×2715981² = 14753105584722, which contains 22 as substring.

2715981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2715983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3910 + ... + 4551.

It is an arithmetic number, because the mean of its divisors is an integer number (456948).

2^2715981 is an apocalyptic number.

It is an amenable number.

2715981 is a deficient number, since it is larger than the sum of its proper divisors (939603).

2715981 is a wasteful number, since it uses less digits than its factorization.

2715981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571.

The product of its digits is 5040, while the sum is 33.

The square root of 2715981 is about 1648.0233614849. The cubic root of 2715981 is about 139.5218552364.

The spelling of 2715981 in words is "two million, seven hundred fifteen thousand, nine hundred eighty-one".