655066001 has 2 divisors, whose sum is σ = 655066002. Its totient is φ = 655066000.

The previous prime is 655065989. The next prime is 655066003. The reversal of 655066001 is 100660556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500685376 + 154380625 = 22376^2 + 12425^2 .

It is a cyclic number.

It is not a de Polignac number, because 655066001 - 2⁶ = 655065937 is a prime.

It is a super-2 number, since 2×655066001² = 858222931332264002, which contains 22 as substring.

Together with 655066003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655066003) 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 as a sum of consecutive naturals, namely, 327533000 + 327533001.

It is an arithmetic number, because the mean of its divisors is an integer number (327533001).

Almost surely, 2^655066001 is an apocalyptic number.

It is an amenable number.

655066001 is a deficient number, since it is larger than the sum of its proper divisors (1).

655066001 is an equidigital number, since it uses as much as digits as its factorization.

655066001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 655066001 is about 25594.2571878928. The cubic root of 655066001 is about 868.4837292001.

The spelling of 655066001 in words is "six hundred fifty-five million, sixty-six thousand, one".