9997770 has 32 divisors (see below), whose sum is σ = 24645888. Its totient is φ = 2593728.

The previous prime is 9997753. The next prime is 9997777. The reversal of 9997770 is 777999.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9997777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3394 + ... + 5613.

It is an arithmetic number, because the mean of its divisors is an integer number (770184).

Almost surely, 2^9997770 is an apocalyptic number.

9997770 is an abundant number, since it is smaller than the sum of its proper divisors (14648118).

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

9997770 is a wasteful number, since it uses less digits than its factorization.

9997770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9054.

The product of its (nonzero) digits is 250047, while the sum is 48.

The square root of 9997770 is about 3161.9250465500. The cubic root of 9997770 is about 215.4274531814.

The spelling of 9997770 in words is "nine million, nine hundred ninety-seven thousand, seven hundred seventy".