655343887 has 16 divisors (see below), whose sum is σ = 729793152. Its totient is φ = 583417120.

The previous prime is 655343879. The next prime is 655343903. The reversal of 655343887 is 788343556.

655343887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655343887 - 2³ = 655343879 is a prime.

It is a super-2 number, since 2×655343887² = 858951220456537538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655343887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655343837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551508 + ... + 552694.

It is an arithmetic number, because the mean of its divisors is an integer number (45612072).

Almost surely, 2^655343887 is an apocalyptic number.

655343887 is a deficient number, since it is larger than the sum of its proper divisors (74449265).

655343887 is a wasteful number, since it uses less digits than its factorization.

655343887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198.

The product of its digits is 2419200, while the sum is 49.

The square root of 655343887 is about 25599.6852910343. The cubic root of 655343887 is about 868.6065185328.

The spelling of 655343887 in words is "six hundred fifty-five million, three hundred forty-three thousand, eight hundred eighty-seven".