655448077 has 2 divisors, whose sum is σ = 655448078. Its totient is φ = 655448076.

The previous prime is 655447999. The next prime is 655448083. The reversal of 655448077 is 770844556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370986121 + 284461956 = 19261^2 + 16866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655448077 is a prime.

It is a super-2 number, since 2×655448077² = 859224363285995858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655448177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327724038 + 327724039.

It is an arithmetic number, because the mean of its divisors is an integer number (327724039).

Almost surely, 2^655448077 is an apocalyptic number.

It is an amenable number.

655448077 is a deficient number, since it is larger than the sum of its proper divisors (1).

655448077 is an equidigital number, since it uses as much as digits as its factorization.

655448077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 940800, while the sum is 46.

The square root of 655448077 is about 25601.7201961118. The cubic root of 655448077 is about 868.6525479632.

The spelling of 655448077 in words is "six hundred fifty-five million, four hundred forty-eight thousand, seventy-seven".