655256785 has 16 divisors (see below), whose sum is σ = 792155520. Its totient is φ = 520323840.

The previous prime is 655256783. The next prime is 655256803. The reversal of 655256785 is 587652556.

655256785 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 655256785 - 2¹ = 655256783 is a prime.

It is a super-2 number, since 2×655256785² = 858722908577072450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655256783) 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, 439321 + ... + 440809.

It is an arithmetic number, because the mean of its divisors is an integer number (49509720).

Almost surely, 2^655256785 is an apocalyptic number.

It is an amenable number.

655256785 is a deficient number, since it is larger than the sum of its proper divisors (136898735).

655256785 is a wasteful number, since it uses less digits than its factorization.

655256785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088.

The product of its digits is 2520000, while the sum is 49.

The square root of 655256785 is about 25597.9840026515. The cubic root of 655256785 is about 868.5680345558.

The spelling of 655256785 in words is "six hundred fifty-five million, two hundred fifty-six thousand, seven hundred eighty-five".