5557663 has 2 divisors, whose sum is σ = 5557664. Its totient is φ = 5557662.

The previous prime is 5557661. The next prime is 5557723. The reversal of 5557663 is 3667555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5557663 - 2¹ = 5557661 is a prime.

Together with 5557661, it forms a pair of twin primes.

5557663 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5557661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778831 + 2778832.

It is an arithmetic number, because the mean of its divisors is an integer number (2778832).

Almost surely, 2^5557663 is an apocalyptic number.

5557663 is a deficient number, since it is larger than the sum of its proper divisors (1).

5557663 is an equidigital number, since it uses as much as digits as its factorization.

5557663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 37.

The square root of 5557663 is about 2357.4696180439. The cubic root of 5557663 is about 177.1321536382.

The spelling of 5557663 in words is "five million, five hundred fifty-seven thousand, six hundred sixty-three".