223764997 has 2 divisors, whose sum is σ = 223764998. Its totient is φ = 223764996.

The previous prime is 223764943. The next prime is 223765001. The reversal of 223764997 is 799467322.

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., 204175521 + 19589476 = 14289^2 + 4426^2 .

It is a cyclic number.

It is not a de Polignac number, because 223764997 - 2¹¹ = 223762949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223764997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223761997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111882498 + 111882499.

It is an arithmetic number, because the mean of its divisors is an integer number (111882499).

Almost surely, 2^223764997 is an apocalyptic number.

It is an amenable number.

223764997 is a deficient number, since it is larger than the sum of its proper divisors (1).

223764997 is an equidigital number, since it uses as much as digits as its factorization.

223764997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 49.

The square root of 223764997 is about 14958.7765876759. The cubic root of 223764997 is about 607.1053368700.

The spelling of 223764997 in words is "two hundred twenty-three million, seven hundred sixty-four thousand, nine hundred ninety-seven".