2655993 has 4 divisors (see below), whose sum is σ = 3541328. Its totient is φ = 1770660.

The previous prime is 2655977. The next prime is 2656009. The reversal of 2655993 is 3995562.

2655993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2655977) and next prime (2656009).

It is not a de Polignac number, because 2655993 - 2⁴ = 2655977 is a prime.

It is a super-4 number, since 4×2655993⁴ (a number of 27 digits) contains 4444 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2655943) 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, 442663 + ... + 442668.

It is an arithmetic number, because the mean of its divisors is an integer number (885332).

2^2655993 is an apocalyptic number.

It is an amenable number.

2655993 is a deficient number, since it is larger than the sum of its proper divisors (885335).

2655993 is an equidigital number, since it uses as much as digits as its factorization.

2655993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885334.

The product of its digits is 72900, while the sum is 39.

The square root of 2655993 is about 1629.7217553926. The cubic root of 2655993 is about 138.4869897896.

The spelling of 2655993 in words is "two million, six hundred fifty-five thousand, nine hundred ninety-three".