2071669 has 2 divisors, whose sum is σ = 2071670. Its totient is φ = 2071668.

The previous prime is 2071661. The next prime is 2071681. The reversal of 2071669 is 9661702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1782225 + 289444 = 1335^2 + 538^2 .

It is a cyclic number.

It is not a de Polignac number, because 2071669 - 2³ = 2071661 is a prime.

It is a super-2 number, since 2×2071669² = 8583624891122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2071669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2071661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035834 + 1035835.

It is an arithmetic number, because the mean of its divisors is an integer number (1035835).

2^2071669 is an apocalyptic number.

It is an amenable number.

2071669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2071669 is an equidigital number, since it uses as much as digits as its factorization.

2071669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 2071669 is about 1439.3293577219. The cubic root of 2071669 is about 127.4794327968.

The spelling of 2071669 in words is "two million, seventy-one thousand, six hundred sixty-nine".