9981562 has 4 divisors (see below), whose sum is σ = 14972346. Its totient is φ = 4990780.

The previous prime is 9981557. The next prime is 9981599. The reversal of 9981562 is 2651899.

9981562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5013121 + 4968441 = 2239^2 + 2229^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495389 + ... + 2495392.

Almost surely, 2^9981562 is an apocalyptic number.

9981562 is a deficient number, since it is larger than the sum of its proper divisors (4990784).

9981562 is a wasteful number, since it uses less digits than its factorization.

9981562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990783.

The product of its digits is 38880, while the sum is 40.

The square root of 9981562 is about 3159.3610113439. The cubic root of 9981562 is about 215.3109759835.

The spelling of 9981562 in words is "nine million, nine hundred eighty-one thousand, five hundred sixty-two".