2051687 has 12 divisors (see below), whose sum is σ = 2331528. Its totient is φ = 1789200.

The previous prime is 2051671. The next prime is 2051689. The reversal of 2051687 is 7861502.

It is not a de Polignac number, because 2051687 - 2⁴ = 2051671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051689) 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, 28862 + ... + 28932.

It is an arithmetic number, because the mean of its divisors is an integer number (194294).

2^2051687 is an apocalyptic number.

2051687 is a deficient number, since it is larger than the sum of its proper divisors (279841).

2051687 is an equidigital number, since it uses as much as digits as its factorization.

2051687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2051687 is about 1432.3711111301. The cubic root of 2051687 is about 127.0682461232.

The spelling of 2051687 in words is "two million, fifty-one thousand, six hundred eighty-seven".