9977652 has 18 divisors (see below), whose sum is σ = 25221378. Its totient is φ = 3325872.

The previous prime is 9977651. The next prime is 9977659. The reversal of 9977652 is 2567799.

9977652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8328996 + 1648656 = 2886^2 + 1284^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9977598 and 9977607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138543 + ... + 138614.

Almost surely, 2^9977652 is an apocalyptic number.

It is an amenable number.

9977652 is an abundant number, since it is smaller than the sum of its proper divisors (15243726).

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

9977652 is a wasteful number, since it uses less digits than its factorization.

9977652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277167 (or 277162 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 9977652 is about 3158.7421547192. The cubic root of 9977652 is about 215.2828582779.

It can be divided in two parts, 997 and 7652, that added together give a square (8649 = 93²).

The spelling of 9977652 in words is "nine million, nine hundred seventy-seven thousand, six hundred fifty-two".