655652765 has 16 divisors (see below), whose sum is σ = 817147440. Its totient is φ = 504599040.

The previous prime is 655652761. The next prime is 655652797. The reversal of 655652765 is 567256556.

It can be written as a sum of positive squares in 8 ways, for example, as 3463321 + 652189444 = 1861^2 + 25538^2 .

It is not a de Polignac number, because 655652765 - 2² = 655652761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655652761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3446 + ... + 36375.

It is an arithmetic number, because the mean of its divisors is an integer number (51071715).

Almost surely, 2^655652765 is an apocalyptic number.

It is an amenable number.

655652765 is a deficient number, since it is larger than the sum of its proper divisors (161494675).

655652765 is a wasteful number, since it uses less digits than its factorization.

655652765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39952.

The product of its digits is 1890000, while the sum is 47.

The square root of 655652765 is about 25605.7174279496. The cubic root of 655652765 is about 868.7429615564.

The spelling of 655652765 in words is "six hundred fifty-five million, six hundred fifty-two thousand, seven hundred sixty-five".