655255783 has 48 divisors (see below), whose sum is σ = 861840000. Its totient is φ = 493129728.

The previous prime is 655255771. The next prime is 655255817. The reversal of 655255783 is 387552556.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-655255783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655255883) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1459143 + ... + 1459591.

It is an arithmetic number, because the mean of its divisors is an integer number (17955000).

Almost surely, 2^655255783 is an apocalyptic number.

655255783 is a deficient number, since it is larger than the sum of its proper divisors (206584217).

655255783 is a wasteful number, since it uses less digits than its factorization.

655255783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 577 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 46.

The square root of 655255783 is about 25597.9644307902. The cubic root of 655255783 is about 868.5675918258.

The spelling of 655255783 in words is "six hundred fifty-five million, two hundred fifty-five thousand, seven hundred eighty-three".