2197973 has 2 divisors, whose sum is σ = 2197974. Its totient is φ = 2197972.

The previous prime is 2197961. The next prime is 2198003. The reversal of 2197973 is 3797912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1495729 + 702244 = 1223^2 + 838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2197973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2197933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098986 + 1098987.

It is an arithmetic number, because the mean of its divisors is an integer number (1098987).

2^2197973 is an apocalyptic number.

It is an amenable number.

2197973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197973 is an equidigital number, since it uses as much as digits as its factorization.

2197973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 38.

The square root of 2197973 is about 1482.5562383937. The cubic root of 2197973 is about 130.0191884891.

It can be divided in two parts, 219 and 7973, that added together give a 13-th power (8192 = 2¹³).

The spelling of 2197973 in words is "two million, one hundred ninety-seven thousand, nine hundred seventy-three".