655773061 has 2 divisors, whose sum is σ = 655773062. Its totient is φ = 655773060.

The previous prime is 655773043. The next prime is 655773073. The reversal of 655773061 is 160377556.

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., 604864836 + 50908225 = 24594^2 + 7135^2 .

It is a cyclic number.

It is not a de Polignac number, because 655773061 - 2⁵ = 655773029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655773661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327886530 + 327886531.

It is an arithmetic number, because the mean of its divisors is an integer number (327886531).

Almost surely, 2^655773061 is an apocalyptic number.

It is an amenable number.

655773061 is a deficient number, since it is larger than the sum of its proper divisors (1).

655773061 is an equidigital number, since it uses as much as digits as its factorization.

655773061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 655773061 is about 25608.0663268432. The cubic root of 655773061 is about 868.7960892271.

The spelling of 655773061 in words is "six hundred fifty-five million, seven hundred seventy-three thousand, sixty-one".