2148681 has 8 divisors (see below), whose sum is σ = 3033504. Its totient is φ = 1348160.

The previous prime is 2148677. The next prime is 2148709. The reversal of 2148681 is 1868412.

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 2148681 - 2² = 2148677 is a prime.

It is a super-2 number, since 2×2148681² = 9233660079522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2148631) 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, 21015 + ... + 21116.

It is an arithmetic number, because the mean of its divisors is an integer number (379188).

2^2148681 is an apocalyptic number.

It is an amenable number.

2148681 is a deficient number, since it is larger than the sum of its proper divisors (884823).

2148681 is a wasteful number, since it uses less digits than its factorization.

2148681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42151.

The product of its digits is 3072, while the sum is 30.

The square root of 2148681 is about 1465.8379855905. The cubic root of 2148681 is about 129.0398891125.

The spelling of 2148681 in words is "two million, one hundred forty-eight thousand, six hundred eighty-one".