2088661 has 2 divisors, whose sum is σ = 2088662. Its totient is φ = 2088660.

The previous prime is 2088643. The next prime is 2088679. The reversal of 2088661 is 1668802.

It is a balanced prime because it is at equal distance from previous prime (2088643) and next prime (2088679).

It can be written as a sum of positive squares in only one way, i.e., 2002225 + 86436 = 1415^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 2088661 - 2¹⁹ = 1564373 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2088601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044330 + 1044331.

It is an arithmetic number, because the mean of its divisors is an integer number (1044331).

2^2088661 is an apocalyptic number.

It is an amenable number.

2088661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2088661 is an equidigital number, since it uses as much as digits as its factorization.

2088661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2088661 is about 1445.2200524488. The cubic root of 2088661 is about 127.8270164923.

The spelling of 2088661 in words is "two million, eighty-eight thousand, six hundred sixty-one".