5663751 has 4 divisors (see below), whose sum is σ = 7551672. Its totient is φ = 3775832.

The previous prime is 5663689. The next prime is 5663759. The reversal of 5663751 is 1573665.

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 5663751 - 2⁹ = 5663239 is a prime.

It is a D-number.

5663751 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5663759) 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, 943956 + ... + 943961.

It is an arithmetic number, because the mean of its divisors is an integer number (1887918).

Almost surely, 2^5663751 is an apocalyptic number.

5663751 is a deficient number, since it is larger than the sum of its proper divisors (1887921).

5663751 is a wasteful number, since it uses less digits than its factorization.

5663751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887920.

The product of its digits is 18900, while the sum is 33.

The square root of 5663751 is about 2379.8636515565. The cubic root of 5663751 is about 178.2521255632.

The spelling of 5663751 in words is "five million, six hundred sixty-three thousand, seven hundred fifty-one".