655112017 has 12 divisors (see below), whose sum is σ = 806897700. Its totient is φ = 528493056.

The previous prime is 655112011. The next prime is 655112021. The reversal of 655112017 is 710211556.

It can be written as a sum of positive squares in 2 ways, for example, as 326922561 + 328189456 = 18081^2 + 18116^2 .

It is not a de Polignac number, because 655112017 - 2²³ = 646723409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655112011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 392392 + ... + 394057.

It is an arithmetic number, because the mean of its divisors is an integer number (67241475).

Almost surely, 2^655112017 is an apocalyptic number.

It is an amenable number.

655112017 is a deficient number, since it is larger than the sum of its proper divisors (151785683).

655112017 is a wasteful number, since it uses less digits than its factorization.

655112017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786480 (or 786473 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 655112017 is about 25595.1561237669. The cubic root of 655112017 is about 868.5040646632.

It can be divided in two parts, 65511 and 2017, that added together give a triangular number (67528 = T₃₆₇).

The spelling of 655112017 in words is "six hundred fifty-five million, one hundred twelve thousand, seventeen".