955780661 has 16 divisors (see below), whose sum is σ = 1062471168. Its totient is φ = 852495600.

The previous prime is 955780627. The next prime is 955780667. The reversal of 955780661 is 166087559.

955780661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 955780661 - 2⁶ = 955780597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (955780667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191366 + ... + 196296.

It is an arithmetic number, because the mean of its divisors is an integer number (66404448).

Almost surely, 2^955780661 is an apocalyptic number.

It is an amenable number.

955780661 is a deficient number, since it is larger than the sum of its proper divisors (106690507).

955780661 is a wasteful number, since it uses less digits than its factorization.

955780661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 955780661 is about 30915.7024988920. The cubic root of 955780661 is about 985.0374593019.

The spelling of 955780661 in words is "nine hundred fifty-five million, seven hundred eighty thousand, six hundred sixty-one".