9689820 has 48 divisors (see below), whose sum is σ = 31008768. Its totient is φ = 2214720.

The previous prime is 9689767. The next prime is 9689891. The reversal of 9689820 is 289869.

It is a super-2 number, since 2×9689820² = 187785223264800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 11116 + ... + 11955.

It is an arithmetic number, because the mean of its divisors is an integer number (646016).

Almost surely, 2^9689820 is an apocalyptic number.

It is an amenable number.

9689820 is an abundant number, since it is smaller than the sum of its proper divisors (21318948).

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

9689820 is a wasteful number, since it uses less digits than its factorization.

9689820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23090 (or 23088 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 9689820 is about 3112.8475709549. The cubic root of 9689820 is about 213.1924905864.

The spelling of 9689820 in words is "nine million, six hundred eighty-nine thousand, eight hundred twenty".