2488681 has 8 divisors (see below), whose sum is σ = 2838024. Its totient is φ = 2161920.

The previous prime is 2488667. The next prime is 2488687. The reversal of 2488681 is 1868842.

2488681 = 1115² + 1116².

It can be written as a sum of positive squares in 4 ways, for example, as 1010025 + 1478656 = 1005^2 + 1216^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2488681 - 2⁷ = 2488553 is a prime.

It is a super-2 number, since 2×2488681² = 12387066239522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2488681.

It is not an unprimeable number, because it can be changed into a prime (2488687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5410 + ... + 5851.

It is an arithmetic number, because the mean of its divisors is an integer number (354753).

2^2488681 is an apocalyptic number.

2488681 is the 1116-th centered square number.

It is an amenable number.

2488681 is a deficient number, since it is larger than the sum of its proper divisors (349343).

2488681 is a wasteful number, since it uses less digits than its factorization.

2488681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291.

The product of its digits is 24576, while the sum is 37.

The square root of 2488681 is about 1577.5553873002. Note that the first 3 decimals coincide. The cubic root of 2488681 is about 135.5157409671.

The spelling of 2488681 in words is "two million, four hundred eighty-eight thousand, six hundred eighty-one".