955642661 has 8 divisors (see below), whose sum is σ = 968417184. Its totient is φ = 942898320.

The previous prime is 955642657. The next prime is 955642711. The reversal of 955642661 is 166246559.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 955642661 - 2² = 955642657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (955642651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60215 + ... + 74411.

It is an arithmetic number, because the mean of its divisors is an integer number (121052148).

Almost surely, 2^955642661 is an apocalyptic number.

It is an amenable number.

955642661 is a deficient number, since it is larger than the sum of its proper divisors (12774523).

955642661 is a wasteful number, since it uses less digits than its factorization.

955642661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15091.

The product of its digits is 388800, while the sum is 44.

The square root of 955642661 is about 30913.4705427909. The cubic root of 955642661 is about 984.9900489431.

The spelling of 955642661 in words is "nine hundred fifty-five million, six hundred forty-two thousand, six hundred sixty-one".