9977644 has 12 divisors (see below), whose sum is σ = 17484768. Its totient is φ = 4982000.

The previous prime is 9977633. The next prime is 9977651. The reversal of 9977644 is 4467799.

9977644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a d-powerful number, because it can be written as 9² + 9³ + 7² + 7⁸ + 6⁴ + 4⁷ + 4¹¹ .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9977594 and 9977603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3069 + ... + 5419.

It is an arithmetic number, because the mean of its divisors is an integer number (1457064).

Almost surely, 2^9977644 is an apocalyptic number.

It is an amenable number.

9977644 is a deficient number, since it is larger than the sum of its proper divisors (7507124).

9977644 is a wasteful number, since it uses less digits than its factorization.

9977644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416 (or 3414 counting only the distinct ones).

The product of its digits is 381024, while the sum is 46.

The square root of 9977644 is about 3158.7408883921. The cubic root of 9977644 is about 215.2828007405.

The spelling of 9977644 in words is "nine million, nine hundred seventy-seven thousand, six hundred forty-four".