553958663 has 2 divisors, whose sum is σ = 553958664. Its totient is φ = 553958662.

The previous prime is 553958627. The next prime is 553958677. The reversal of 553958663 is 366859355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 553958663 - 2⁶ = 553958599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553958693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276979331 + 276979332.

It is an arithmetic number, because the mean of its divisors is an integer number (276979332).

Almost surely, 2^553958663 is an apocalyptic number.

553958663 is a deficient number, since it is larger than the sum of its proper divisors (1).

553958663 is an equidigital number, since it uses as much as digits as its factorization.

553958663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916000, while the sum is 50.

The square root of 553958663 is about 23536.3264550779. The cubic root of 553958663 is about 821.2822804153.

The spelling of 553958663 in words is "five hundred fifty-three million, nine hundred fifty-eight thousand, six hundred sixty-three".