5606991 has 24 divisors (see below), whose sum is σ = 9238320. Its totient is φ = 3246336.

The previous prime is 5606989. The next prime is 5607023. The reversal of 5606991 is 1996065.

5606991 is a `hidden beast` number, since 560 + 6 + 9 + 91 = 666.

It is not a de Polignac number, because 5606991 - 2¹ = 5606989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5606921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 580 + ... + 3398.

It is an arithmetic number, because the mean of its divisors is an integer number (384930).

Almost surely, 2^5606991 is an apocalyptic number.

5606991 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

5606991 is a deficient number, since it is larger than the sum of its proper divisors (3631329).

5606991 is a wasteful number, since it uses less digits than its factorization.

5606991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 5606991 is about 2367.9085708701. The cubic root of 5606991 is about 177.6546664866.

The spelling of 5606991 in words is "five million, six hundred six thousand, nine hundred ninety-one".