9662720 has 36 divisors (see below), whose sum is σ = 23148300. Its totient is φ = 3864576.

The previous prime is 9662711. The next prime is 9662729. The reversal of 9662720 is 272669.

It is an interprime number because it is at equal distance from previous prime (9662711) and next prime (9662729).

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 3748096 = 2432^2 + 1936^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (9662729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2495 + ... + 5054.

Almost surely, 2^9662720 is an apocalyptic number.

It is an amenable number.

9662720 is an abundant number, since it is smaller than the sum of its proper divisors (13485580).

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

9662720 is an equidigital number, since it uses as much as digits as its factorization.

9662720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7570 (or 7556 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 9662720 is about 3108.4915956135. The cubic root of 9662720 is about 212.9935563451.

The spelling of 9662720 in words is "nine million, six hundred sixty-two thousand, seven hundred twenty".