401022660 has 24 divisors (see below), whose sum is σ = 1122863616. Its totient is φ = 106939360.

The previous prime is 401022647. The next prime is 401022667. The reversal of 401022660 is 66220104.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (401022667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3341796 + ... + 3341915.

It is an arithmetic number, because the mean of its divisors is an integer number (46785984).

Almost surely, 2^401022660 is an apocalyptic number.

It is an amenable number.

401022660 is an abundant number, since it is smaller than the sum of its proper divisors (721840956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401022660 is a wasteful number, since it uses less digits than its factorization.

401022660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6683723 (or 6683721 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 401022660 is about 20025.5501797079. The cubic root of 401022660 is about 737.4336839729.

Adding to 401022660 its reverse (66220104), we get a palindrome (467242764).

The spelling of 401022660 in words is "four hundred one million, twenty-two thousand, six hundred sixty".