9902207660 has 48 divisors (see below), whose sum is σ = 21512911392. Its totient is φ = 3825984000.

The previous prime is 9902207659. The next prime is 9902207803. The reversal of 9902207660 is 667022099.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23039 + ... + 142601.

It is an arithmetic number, because the mean of its divisors is an integer number (448185654).

Almost surely, 2^9902207660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9902207660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10756455696).

9902207660 is an abundant number, since it is smaller than the sum of its proper divisors (11610703732).

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

9902207660 is a wasteful number, since it uses less digits than its factorization.

With its successor (9902207661) it forms an eRAP, since the sums of their prime factors are consecutive (119714 and 119715).

9902207660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119714 (or 119712 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 9902207660 is about 99509.8370011729. The cubic root of 9902207660 is about 2147.3887649661.

The spelling of 9902207660 in words is "nine billion, nine hundred two million, two hundred seven thousand, six hundred sixty".