9697780 has 24 divisors (see below), whose sum is σ = 20701800. Its totient is φ = 3815040.

The previous prime is 9697739. The next prime is 9697801. The reversal of 9697780 is 877969.

9697780 = T₁₅₁ + T₁₅₂ + ... + T₃₉₄.

It can be written as a sum of positive squares in 4 ways, for example, as 784 + 9696996 = 28^2 + 3114^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9697780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755 + ... + 5194.

It is an arithmetic number, because the mean of its divisors is an integer number (862575).

Almost surely, 2^9697780 is an apocalyptic number.

It is an amenable number.

9697780 is an abundant number, since it is smaller than the sum of its proper divisors (11004020).

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

9697780 is a wasteful number, since it uses less digits than its factorization.

9697780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019 (or 8017 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 9697780 is about 3114.1258805642. The cubic root of 9697780 is about 213.2508524462.

The spelling of 9697780 in words is "nine million, six hundred ninety-seven thousand, seven hundred eighty".