2681901 has 6 divisors (see below), whose sum is σ = 3873870. Its totient is φ = 1787928.

The previous prime is 2681897. The next prime is 2681927. The reversal of 2681901 is 1091862.

2681901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2643876 + 38025 = 1626^2 + 195^2 .

It is not a de Polignac number, because 2681901 - 2² = 2681897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681951) 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 5 ways as a sum of consecutive naturals, for example, 148986 + ... + 149003.

It is an arithmetic number, because the mean of its divisors is an integer number (645645).

2^2681901 is an apocalyptic number.

It is an amenable number.

2681901 is a deficient number, since it is larger than the sum of its proper divisors (1191969).

2681901 is a wasteful number, since it uses less digits than its factorization.

2681901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297995 (or 297992 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2681901 is about 1637.6510617345. The cubic root of 2681901 is about 138.9358260085.

The spelling of 2681901 in words is "two million, six hundred eighty-one thousand, nine hundred one".