490565623 has 2 divisors, whose sum is σ = 490565624. Its totient is φ = 490565622.

The previous prime is 490565609. The next prime is 490565639. The reversal of 490565623 is 326565094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490565623 - 2⁵ = 490565591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490565683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245282811 + 245282812.

It is an arithmetic number, because the mean of its divisors is an integer number (245282812).

Almost surely, 2^490565623 is an apocalyptic number.

490565623 is a deficient number, since it is larger than the sum of its proper divisors (1).

490565623 is an equidigital number, since it uses as much as digits as its factorization.

490565623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 490565623 is about 22148.7160575958. The cubic root of 490565623 is about 788.6767480945.

The spelling of 490565623 in words is "four hundred ninety million, five hundred sixty-five thousand, six hundred twenty-three".