9662640 has 160 divisors (see below), whose sum is σ = 34164480. Its totient is φ = 2239488.

The previous prime is 9662633. The next prime is 9662663. The reversal of 9662640 is 462669.

It is a super-2 number, since 2×9662640² = 186733223539200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59199 + ... + 59361.

It is an arithmetic number, because the mean of its divisors is an integer number (213528).

Almost surely, 2^9662640 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 9662640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17082240).

9662640 is an abundant number, since it is smaller than the sum of its proper divisors (24501840).

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

9662640 is a wasteful number, since it uses less digits than its factorization.

9662640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 9662640 is about 3108.4787276094. The cubic root of 9662640 is about 212.9929685351.

The spelling of 9662640 in words is "nine million, six hundred sixty-two thousand, six hundred forty".