2689481 has 4 divisors (see below), whose sum is σ = 2746752. Its totient is φ = 2632212.

The previous prime is 2689457. The next prime is 2689483. The reversal of 2689481 is 1849862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2689481 is a prime.

It is a super-2 number, since 2×2689481² = 14466616098722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2689483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28565 + ... + 28658.

It is an arithmetic number, because the mean of its divisors is an integer number (686688).

2^2689481 is an apocalyptic number.

It is an amenable number.

2689481 is a deficient number, since it is larger than the sum of its proper divisors (57271).

2689481 is an equidigital number, since it uses as much as digits as its factorization.

2689481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57270.

The product of its digits is 27648, while the sum is 38.

The square root of 2689481 is about 1639.9637191109. The cubic root of 2689481 is about 139.0665967989.

The spelling of 2689481 in words is "two million, six hundred eighty-nine thousand, four hundred eighty-one".