2061869 has 2 divisors, whose sum is σ = 2061870. Its totient is φ = 2061868.

The previous prime is 2061847. The next prime is 2061877. The reversal of 2061869 is 9681602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1592644 + 469225 = 1262^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061869 - 2⁸ = 2061613 is a prime.

It is a super-2 number, since 2×2061869² = 8502607546322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2861869) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030934 + 1030935.

It is an arithmetic number, because the mean of its divisors is an integer number (1030935).

2^2061869 is an apocalyptic number.

It is an amenable number.

2061869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061869 is an equidigital number, since it uses as much as digits as its factorization.

2061869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2061869 is about 1435.9209588275. The cubic root of 2061869 is about 127.2781017984.

The spelling of 2061869 in words is "two million, sixty-one thousand, eight hundred sixty-nine".