208623001 has 2 divisors, whose sum is σ = 208623002. Its totient is φ = 208623000.

The previous prime is 208622987. The next prime is 208623007. The reversal of 208623001 is 100326802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204461401 + 4161600 = 14299^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 208623001 - 2⁵ = 208622969 is a prime.

It is not a weakly prime, because it can be changed into another prime (208623007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104311500 + 104311501.

It is an arithmetic number, because the mean of its divisors is an integer number (104311501).

Almost surely, 2^208623001 is an apocalyptic number.

It is an amenable number.

208623001 is a deficient number, since it is larger than the sum of its proper divisors (1).

208623001 is an equidigital number, since it uses as much as digits as its factorization.

208623001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 208623001 is about 14443.7876265196. The cubic root of 208623001 is about 593.0901747039.

Adding to 208623001 its reverse (100326802), we get a palindrome (308949803).

The spelling of 208623001 in words is "two hundred eight million, six hundred twenty-three thousand, one".