2197723 has 12 divisors (see below), whose sum is σ = 2480184. Its totient is φ = 1944800.

The previous prime is 2197703. The next prime is 2197733. The reversal of 2197723 is 3277912.

It is a de Polignac number, because none of the positive numbers 2^k-2197723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2197703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4740 + ... + 5182.

It is an arithmetic number, because the mean of its divisors is an integer number (206682).

2^2197723 is an apocalyptic number.

2197723 is a deficient number, since it is larger than the sum of its proper divisors (282461).

2197723 is a wasteful number, since it uses less digits than its factorization.

2197723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 495 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 2197723 is about 1482.4719221624. The cubic root of 2197723 is about 130.0142587910.

The spelling of 2197723 in words is "two million, one hundred ninety-seven thousand, seven hundred twenty-three".