9662880420 has 168 divisors, whose sum is σ = 31407048960. Its totient is φ = 2493529920.

The previous prime is 9662880401. The next prime is 9662880421. The reversal of 9662880420 is 240882669.

9662880420 is a `hidden beast` number, since 96 + 62 + 8 + 80 + 420 = 666.

It is a super-2 number, since 2×9662880420² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9662880421) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 441291 + ... + 462669.

It is an arithmetic number, because the mean of its divisors is an integer number (186946720).

Almost surely, 2^9662880420 is an apocalyptic number.

9662880420 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9662880420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15703524480).

9662880420 is an abundant number, since it is smaller than the sum of its proper divisors (21744168540).

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

9662880420 is a wasteful number, since it uses less digits than its factorization.

9662880420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21437 (or 21420 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 9662880420 is about 98299.9512716054. The cubic root of 9662880420 is about 2129.9473504145.

The spelling of 9662880420 in words is "nine billion, six hundred sixty-two million, eight hundred eighty thousand, four hundred twenty".