22718653 has 2 divisors, whose sum is σ = 22718654. Its totient is φ = 22718652.

The previous prime is 22718621. The next prime is 22718659. The reversal of 22718653 is 35681722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22638564 + 80089 = 4758^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 22718653 - 2⁵ = 22718621 is a prime.

It is a super-2 number, since 2×22718653² = 1032274388268818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22718659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11359326 + 11359327.

It is an arithmetic number, because the mean of its divisors is an integer number (11359327).

Almost surely, 2^22718653 is an apocalyptic number.

It is an amenable number.

22718653 is a deficient number, since it is larger than the sum of its proper divisors (1).

22718653 is an equidigital number, since it uses as much as digits as its factorization.

22718653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 22718653 is about 4766.4088158697. The cubic root of 22718653 is about 283.2223526903. Note that the first 3 decimals are identical.

The spelling of 22718653 in words is "twenty-two million, seven hundred eighteen thousand, six hundred fifty-three".