223720853 has 2 divisors, whose sum is σ = 223720854. Its totient is φ = 223720852.

The previous prime is 223720807. The next prime is 223720879. The reversal of 223720853 is 358027322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211935364 + 11785489 = 14558^2 + 3433^2 .

It is a cyclic number.

It is not a de Polignac number, because 223720853 - 2¹⁶ = 223655317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223720753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111860426 + 111860427.

It is an arithmetic number, because the mean of its divisors is an integer number (111860427).

Almost surely, 2^223720853 is an apocalyptic number.

It is an amenable number.

223720853 is a deficient number, since it is larger than the sum of its proper divisors (1).

223720853 is an equidigital number, since it uses as much as digits as its factorization.

223720853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 223720853 is about 14957.3009931605. The cubic root of 223720853 is about 607.0654113218.

The spelling of 223720853 in words is "two hundred twenty-three million, seven hundred twenty thousand, eight hundred fifty-three".