2087669 has 2 divisors, whose sum is σ = 2087670. Its totient is φ = 2087668.

The previous prime is 2087627. The next prime is 2087671. The reversal of 2087669 is 9667802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1532644 + 555025 = 1238^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 2087669 - 2¹² = 2083573 is a prime.

It is a super-2 number, since 2×2087669² = 8716723707122, which contains 22 as substring.

Together with 2087671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2087689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043834 + 1043835.

It is an arithmetic number, because the mean of its divisors is an integer number (1043835).

2^2087669 is an apocalyptic number.

It is an amenable number.

2087669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087669 is an equidigital number, since it uses as much as digits as its factorization.

2087669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 2087669 is about 1444.8768113580. The cubic root of 2087669 is about 127.8067763352.

The spelling of 2087669 in words is "two million, eighty-seven thousand, six hundred sixty-nine".