9669780 has 120 divisors (see below), whose sum is σ = 31223808. Its totient is φ = 2503872.

The previous prime is 9669773. The next prime is 9669811. The reversal of 9669780 is 879669.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76077 + ... + 76203.

Almost surely, 2^9669780 is an apocalyptic number.

9669780 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 9669780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15611904).

9669780 is an abundant number, since it is smaller than the sum of its proper divisors (21554028).

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

9669780 is a wasteful number, since it uses less digits than its factorization.

9669780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 9669780 is about 3109.6269872768. The cubic root of 9669780 is about 213.0454178095.

The spelling of 9669780 in words is "nine million, six hundred sixty-nine thousand, seven hundred eighty".