223629649 has 2 divisors, whose sum is σ = 223629650. Its totient is φ = 223629648.

The previous prime is 223629617. The next prime is 223629761. The reversal of 223629649 is 946926322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223293249 + 336400 = 14943^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 223629649 - 2⁵ = 223629617 is a prime.

It is not a weakly prime, because it can be changed into another prime (223629349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111814824 + 111814825.

It is an arithmetic number, because the mean of its divisors is an integer number (111814825).

Almost surely, 2^223629649 is an apocalyptic number.

It is an amenable number.

223629649 is a deficient number, since it is larger than the sum of its proper divisors (1).

223629649 is an equidigital number, since it uses as much as digits as its factorization.

223629649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 43.

The square root of 223629649 is about 14954.2518702876. The cubic root of 223629649 is about 606.9829062438.

The spelling of 223629649 in words is "two hundred twenty-three million, six hundred twenty-nine thousand, six hundred forty-nine".