9906497 has 4 divisors (see below), whose sum is σ = 9958020. Its totient is φ = 9854976.

The previous prime is 9906493. The next prime is 9906509. The reversal of 9906497 is 7946099.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5740816 + 4165681 = 2396^2 + 2041^2 .

It is a cyclic number.

It is not a de Polignac number, because 9906497 - 2² = 9906493 is a prime.

It is a super-2 number, since 2×9906497² = 196277365622018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906493) 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, 25472 + ... + 25857.

It is an arithmetic number, because the mean of its divisors is an integer number (2489505).

Almost surely, 2^9906497 is an apocalyptic number.

It is an amenable number.

9906497 is a deficient number, since it is larger than the sum of its proper divisors (51523).

9906497 is a wasteful number, since it uses less digits than its factorization.

9906497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51522.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 9906497 is about 3147.4588162516. The cubic root of 9906497 is about 214.7698781722.

The spelling of 9906497 in words is "nine million, nine hundred six thousand, four hundred ninety-seven".