9977768 has 32 divisors (see below), whose sum is σ = 19690560. Its totient is φ = 4730880.

The previous prime is 9977767. The next prime is 9977777. The reversal of 9977768 is 8677799.

It is a happy number.

9977768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38696 + ... + 38952.

It is an arithmetic number, because the mean of its divisors is an integer number (615330).

Almost surely, 2^9977768 is an apocalyptic number.

It is an amenable number.

9977768 is a deficient number, since it is larger than the sum of its proper divisors (9712792).

9977768 is a wasteful number, since it uses less digits than its factorization.

9977768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 493 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 53.

The square root of 9977768 is about 3158.7605164051. The cubic root of 9977768 is about 215.2836925662.

The spelling of 9977768 in words is "nine million, nine hundred seventy-seven thousand, seven hundred sixty-eight".