2073661 has 2 divisors, whose sum is σ = 2073662. Its totient is φ = 2073660.

The previous prime is 2073649. The next prime is 2073667. The reversal of 2073661 is 1663702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1425636 + 648025 = 1194^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 2073661 - 2¹¹ = 2071613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2073667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036830 + 1036831.

It is an arithmetic number, because the mean of its divisors is an integer number (1036831).

2^2073661 is an apocalyptic number.

It is an amenable number.

2073661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2073661 is an equidigital number, since it uses as much as digits as its factorization.

2073661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2073661 is about 1440.0211803998. The cubic root of 2073661 is about 127.5202787174.

The spelling of 2073661 in words is "two million, seventy-three thousand, six hundred sixty-one".