4891663 has 12 divisors (see below), whose sum is σ = 5848528. Its totient is φ = 4007520.

The previous prime is 4891661. The next prime is 4891681. The reversal of 4891663 is 3661984.

It is not a de Polignac number, because 4891663 - 2¹ = 4891661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3043 + ... + 4363.

Almost surely, 2^4891663 is an apocalyptic number.

4891663 is a deficient number, since it is larger than the sum of its proper divisors (956865).

4891663 is a wasteful number, since it uses less digits than its factorization.

4891663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1351 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 4891663 is about 2211.7104240836. The cubic root of 4891663 is about 169.7535413682.

The spelling of 4891663 in words is "four million, eight hundred ninety-one thousand, six hundred sixty-three".