2190775 has 6 divisors (see below), whose sum is σ = 2716592. Its totient is φ = 1752600.

The previous prime is 2190763. The next prime is 2190809. The reversal of 2190775 is 5770912.

It is not a de Polignac number, because 2190775 - 2⁷ = 2190647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 43791 + ... + 43840.

2^2190775 is an apocalyptic number.

2190775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2190775 is a deficient number, since it is larger than the sum of its proper divisors (525817).

2190775 is an equidigital number, since it uses as much as digits as its factorization.

2190775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87641 (or 87636 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 2190775 is about 1480.1266837673. The cubic root of 2190775 is about 129.8771027890.

The spelling of 2190775 in words is "two million, one hundred ninety thousand, seven hundred seventy-five".