9977572 has 24 divisors (see below), whose sum is σ = 20170080. Its totient is φ = 4268160.

The previous prime is 9977551. The next prime is 9977579. The reversal of 9977572 is 2757799.

It is a happy number.

9977572 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 (9977579) 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, 5922 + ... + 7417.

It is an arithmetic number, because the mean of its divisors is an integer number (840420).

Almost surely, 2^9977572 is an apocalyptic number.

It is an amenable number.

9977572 is an abundant number, since it is smaller than the sum of its proper divisors (10192508).

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

9977572 is a wasteful number, since it uses less digits than its factorization.

9977572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13371 (or 13369 counting only the distinct ones).

The product of its digits is 277830, while the sum is 46.

The square root of 9977572 is about 3158.7294914253. The cubic root of 9977572 is about 215.2822829029.

The spelling of 9977572 in words is "nine million, nine hundred seventy-seven thousand, five hundred seventy-two".