2206723 has 2 divisors, whose sum is σ = 2206724. Its totient is φ = 2206722.

The previous prime is 2206709. The next prime is 2206733. The reversal of 2206723 is 3276022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2206723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2206694 and 2206703.

It is not a weakly prime, because it can be changed into another prime (2206733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1103361 + 1103362.

It is an arithmetic number, because the mean of its divisors is an integer number (1103362).

2^2206723 is an apocalyptic number.

2206723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2206723 is an equidigital number, since it uses as much as digits as its factorization.

2206723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 2206723 is about 1485.5042914781. The cubic root of 2206723 is about 130.1914929360.

The spelling of 2206723 in words is "two million, two hundred six thousand, seven hundred twenty-three".