9897737 has 4 divisors (see below), whose sum is σ = 9907716. Its totient is φ = 9887760.

The previous prime is 9897703. The next prime is 9897743. The reversal of 9897737 is 7377989.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5470921 + 4426816 = 2339^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 9897737 - 2¹⁰ = 9896713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9897037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3314 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (2476929).

Almost surely, 2^9897737 is an apocalyptic number.

It is an amenable number.

9897737 is a deficient number, since it is larger than the sum of its proper divisors (9979).

9897737 is a wasteful number, since it uses less digits than its factorization.

9897737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9978.

The product of its digits is 666792, while the sum is 50.

The square root of 9897737 is about 3146.0669096508. The cubic root of 9897737 is about 214.7065547810.

The spelling of 9897737 in words is "nine million, eight hundred ninety-seven thousand, seven hundred thirty-seven".