2379681 has 12 divisors (see below), whose sum is σ = 3521700. Its totient is φ = 1547520.

The previous prime is 2379673. The next prime is 2379683. The reversal of 2379681 is 1869732.

It can be written as a sum of positive squares in 2 ways, for example, as 1245456 + 1134225 = 1116^2 + 1065^2 .

It is not a de Polignac number, because 2379681 - 2³ = 2379673 is a prime.

It is a super-2 number, since 2×2379681² = 11325763323522, which contains 22 as substring.

2379681 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2379683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2856 + ... + 3593.

It is an arithmetic number, because the mean of its divisors is an integer number (293475).

2^2379681 is an apocalyptic number.

It is an amenable number.

2379681 is a deficient number, since it is larger than the sum of its proper divisors (1142019).

2379681 is a wasteful number, since it uses less digits than its factorization.

2379681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6496 (or 6493 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2379681 is about 1542.6214700956. The cubic root of 2379681 is about 133.5076795650.

The spelling of 2379681 in words is "two million, three hundred seventy-nine thousand, six hundred eighty-one".