955623661 has 2 divisors, whose sum is σ = 955623662. Its totient is φ = 955623660.

The previous prime is 955623623. The next prime is 955623667. The reversal of 955623661 is 166326559.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 791296900 + 164326761 = 28130^2 + 12819^2 .

It is a cyclic number.

It is not a de Polignac number, because 955623661 - 2¹¹ = 955621613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (955623667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477811830 + 477811831.

It is an arithmetic number, because the mean of its divisors is an integer number (477811831).

Almost surely, 2^955623661 is an apocalyptic number.

It is an amenable number.

955623661 is a deficient number, since it is larger than the sum of its proper divisors (1).

955623661 is an equidigital number, since it uses as much as digits as its factorization.

955623661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 43.

The square root of 955623661 is about 30913.1632318661. The cubic root of 955623661 is about 984.9835210725.

The spelling of 955623661 in words is "nine hundred fifty-five million, six hundred twenty-three thousand, six hundred sixty-one".