9995657 has 12 divisors (see below), whose sum is σ = 11720340. Its totient is φ = 8499456.

The previous prime is 9995647. The next prime is 9995659. The reversal of 9995657 is 7565999.

It can be written as a sum of positive squares in 2 ways, for example, as 3924361 + 6071296 = 1981^2 + 2464^2 .

It is not a de Polignac number, because 9995657 - 2¹⁴ = 9979273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9995659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5969 + ... + 7457.

It is an arithmetic number, because the mean of its divisors is an integer number (976695).

Almost surely, 2^9995657 is an apocalyptic number.

It is an amenable number.

9995657 is a deficient number, since it is larger than the sum of its proper divisors (1724683).

9995657 is a wasteful number, since it uses less digits than its factorization.

9995657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1633 counting only the distinct ones).

The product of its digits is 765450, while the sum is 50.

The square root of 9995657 is about 3161.5908970011. The cubic root of 9995657 is about 215.4122754541.

The spelling of 9995657 in words is "nine million, nine hundred ninety-five thousand, six hundred fifty-seven".