9997782 has 8 divisors (see below), whose sum is σ = 19995576. Its totient is φ = 3332592.

The previous prime is 9997777. The next prime is 9997783. The reversal of 9997782 is 2877999.

It is a happy number.

9997782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

9997782 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997783) 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, 833143 + ... + 833154.

It is an arithmetic number, because the mean of its divisors is an integer number (2499447).

Almost surely, 2^9997782 is an apocalyptic number.

9997782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9997782 is a wasteful number, since it uses less digits than its factorization.

9997782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666302.

The product of its digits is 571536, while the sum is 51.

The square root of 9997782 is about 3161.9269441276. The cubic root of 9997782 is about 215.4275393716.

The spelling of 9997782 in words is "nine million, nine hundred ninety-seven thousand, seven hundred eighty-two".