655652761 has 2 divisors, whose sum is σ = 655652762. Its totient is φ = 655652760.

The previous prime is 655652747. The next prime is 655652797. The reversal of 655652761 is 167256556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540841536 + 114811225 = 23256^2 + 10715^2 .

It is a cyclic number.

It is not a de Polignac number, because 655652761 - 2⁵ = 655652729 is a prime.

It is not a weakly prime, because it can be changed into another prime (655652161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327826380 + 327826381.

It is an arithmetic number, because the mean of its divisors is an integer number (327826381).

Almost surely, 2^655652761 is an apocalyptic number.

It is an amenable number.

655652761 is a deficient number, since it is larger than the sum of its proper divisors (1).

655652761 is an equidigital number, since it uses as much as digits as its factorization.

655652761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 43.

The square root of 655652761 is about 25605.7173498420. The cubic root of 655652761 is about 868.7429597897.

The spelling of 655652761 in words is "six hundred fifty-five million, six hundred fifty-two thousand, seven hundred sixty-one".