655516361 has 8 divisors (see below), whose sum is σ = 662674824. Its totient is φ = 648371200.

The previous prime is 655516357. The next prime is 655516387. The reversal of 655516361 is 163615556.

It can be written as a sum of positive squares in 4 ways, for example, as 444366400 + 211149961 = 21080^2 + 14531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655516361 - 2² = 655516357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655516331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120251 + ... + 125583.

It is an arithmetic number, because the mean of its divisors is an integer number (82834353).

Almost surely, 2^655516361 is an apocalyptic number.

It is an amenable number.

655516361 is a deficient number, since it is larger than the sum of its proper divisors (7158463).

655516361 is a wasteful number, since it uses less digits than its factorization.

655516361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651.

The product of its digits is 81000, while the sum is 38.

The square root of 655516361 is about 25603.0537436455. The cubic root of 655516361 is about 868.6827120667.

The spelling of 655516361 in words is "six hundred fifty-five million, five hundred sixteen thousand, three hundred sixty-one".