920668571 has 24 divisors (see below), whose sum is σ = 989801472. Its totient is φ = 855489600.

The previous prime is 920668561. The next prime is 920668577. The reversal of 920668571 is 175866029.

920668571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-920668571 is a prime.

It is a super-3 number, since 3×920668571³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920668577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3397166 + ... + 3397436.

It is an arithmetic number, because the mean of its divisors is an integer number (41241728).

Almost surely, 2^920668571 is an apocalyptic number.

920668571 is a deficient number, since it is larger than the sum of its proper divisors (69132901).

920668571 is a wasteful number, since it uses less digits than its factorization.

920668571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 920668571 is about 30342.5208412221. The cubic root of 920668571 is about 972.8243650722.

It can be divided in two parts, 9206 and 68571, that added together give a palindrome (77777).

The spelling of 920668571 in words is "nine hundred twenty million, six hundred sixty-eight thousand, five hundred seventy-one".