223666057 has 2 divisors, whose sum is σ = 223666058. Its totient is φ = 223666056.

The previous prime is 223666031. The next prime is 223666061. The reversal of 223666057 is 750666322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129595456 + 94070601 = 11384^2 + 9699^2 .

It is a cyclic number.

It is not a de Polignac number, because 223666057 - 2²⁷ = 89448329 is a prime.

It is not a weakly prime, because it can be changed into another prime (223666097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111833028 + 111833029.

It is an arithmetic number, because the mean of its divisors is an integer number (111833029).

Almost surely, 2^223666057 is an apocalyptic number.

It is an amenable number.

223666057 is a deficient number, since it is larger than the sum of its proper divisors (1).

223666057 is an equidigital number, since it uses as much as digits as its factorization.

223666057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 223666057 is about 14955.4691333973. The cubic root of 223666057 is about 607.0158443845.

The spelling of 223666057 in words is "two hundred twenty-three million, six hundred sixty-six thousand, fifty-seven".