2199623 has 2 divisors, whose sum is σ = 2199624. Its totient is φ = 2199622.

The previous prime is 2199601. The next prime is 2199629. The reversal of 2199623 is 3269912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2199623 - 2¹² = 2195527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2199623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2199629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099811 + 1099812.

It is an arithmetic number, because the mean of its divisors is an integer number (1099812).

2^2199623 is an apocalyptic number.

2199623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199623 is an equidigital number, since it uses as much as digits as its factorization.

2199623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 2199623 is about 1483.1126053001. The cubic root of 2199623 is about 130.0517151247.

The spelling of 2199623 in words is "two million, one hundred ninety-nine thousand, six hundred twenty-three".