5655987 has 10 divisors (see below), whose sum is σ = 8449188. Its totient is φ = 3770604.

The previous prime is 5655961. The next prime is 5655997. The reversal of 5655987 is 7895565.

5655987 is a `hidden beast` number, since 56 + 5 + 598 + 7 = 666.

It is not a de Polignac number, because 5655987 - 2⁸ = 5655731 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (5655997) 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 9 ways as a sum of consecutive naturals, for example, 34833 + ... + 34994.

Almost surely, 2^5655987 is an apocalyptic number.

5655987 is a deficient number, since it is larger than the sum of its proper divisors (2793201).

5655987 is an equidigital number, since it uses as much as digits as its factorization.

5655987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69839 (or 69830 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 5655987 is about 2378.2319062699. The cubic root of 5655987 is about 178.1706376136.

The spelling of 5655987 in words is "five million, six hundred fifty-five thousand, nine hundred eighty-seven".