554606663 has 4 divisors (see below), whose sum is σ = 597268728. Its totient is φ = 511944600.

The previous prime is 554606651. The next prime is 554606669. The reversal of 554606663 is 366606455.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 554606663 - 2⁸ = 554606407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 554606663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554606669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21331013 + ... + 21331038.

It is an arithmetic number, because the mean of its divisors is an integer number (149317182).

Almost surely, 2^554606663 is an apocalyptic number.

554606663 is a deficient number, since it is larger than the sum of its proper divisors (42662065).

554606663 is a wasteful number, since it uses less digits than its factorization.

554606663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42662064.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 554606663 is about 23550.0883862460. The cubic root of 554606663 is about 821.6023906664.

The spelling of 554606663 in words is "five hundred fifty-four million, six hundred six thousand, six hundred sixty-three".