655612747 has 2 divisors, whose sum is σ = 655612748. Its totient is φ = 655612746.

The previous prime is 655612733. The next prime is 655612757. The reversal of 655612747 is 747216556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655612747 - 2⁷ = 655612619 is a prime.

It is not a weakly prime, because it can be changed into another prime (655612757) 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 as a sum of consecutive naturals, namely, 327806373 + 327806374.

It is an arithmetic number, because the mean of its divisors is an integer number (327806374).

Almost surely, 2^655612747 is an apocalyptic number.

655612747 is a deficient number, since it is larger than the sum of its proper divisors (1).

655612747 is an equidigital number, since it uses as much as digits as its factorization.

655612747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 655612747 is about 25604.9359889846. The cubic root of 655612747 is about 868.7252865181.

The spelling of 655612747 in words is "six hundred fifty-five million, six hundred twelve thousand, seven hundred forty-seven".