223916657 has 2 divisors, whose sum is σ = 223916658. Its totient is φ = 223916656.

The previous prime is 223916603. The next prime is 223916663. The reversal of 223916657 is 756619322.

223916657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219750976 + 4165681 = 14824^2 + 2041^2 .

It is a cyclic number.

It is not a de Polignac number, because 223916657 - 2⁶ = 223916593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223916677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111958328 + 111958329.

It is an arithmetic number, because the mean of its divisors is an integer number (111958329).

Almost surely, 2^223916657 is an apocalyptic number.

It is an amenable number.

223916657 is a deficient number, since it is larger than the sum of its proper divisors (1).

223916657 is an equidigital number, since it uses as much as digits as its factorization.

223916657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 223916657 is about 14963.8449938510. The cubic root of 223916657 is about 607.2424640690.

The spelling of 223916657 in words is "two hundred twenty-three million, nine hundred sixteen thousand, six hundred fifty-seven".