9977636 has 12 divisors (see below), whose sum is σ = 17579100. Its totient is φ = 4955040.

The previous prime is 9977633. The next prime is 9977651. The reversal of 9977636 is 6367799.

It can be written as a sum of positive squares in 2 ways, for example, as 5953600 + 4024036 = 2440^2 + 2006^2 .

It is not an unprimeable number, because it can be changed into a prime (9977633) 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 3 ways as a sum of consecutive naturals, for example, 7775 + ... + 8966.

It is an arithmetic number, because the mean of its divisors is an integer number (1464925).

Almost surely, 2^9977636 is an apocalyptic number.

It is an amenable number.

9977636 is a deficient number, since it is larger than the sum of its proper divisors (7601464).

9977636 is a wasteful number, since it uses less digits than its factorization.

9977636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16894 (or 16892 counting only the distinct ones).

The product of its digits is 428652, while the sum is 47.

The square root of 9977636 is about 3158.7396220645. The cubic root of 9977636 is about 215.2827432032.

The spelling of 9977636 in words is "nine million, nine hundred seventy-seven thousand, six hundred thirty-six".