8991536 has 20 divisors (see below), whose sum is σ = 17467632. Its totient is φ = 4483776.

The previous prime is 8991533. The next prime is 8991539. The reversal of 8991536 is 6351998.

It is an interprime number because it is at equal distance from previous prime (8991533) and next prime (8991539).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8991493 and 8991502.

It is not an unprimeable number, because it can be changed into a prime (8991533) 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, 11246 + ... + 12018.

Almost surely, 2^8991536 is an apocalyptic number.

It is an amenable number.

8991536 is a deficient number, since it is larger than the sum of its proper divisors (8476096).

8991536 is a wasteful number, since it uses less digits than its factorization.

8991536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 1502 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 8991536 is about 2998.5890015139. The cubic root of 8991536 is about 207.9431550775.

The spelling of 8991536 in words is "eight million, nine hundred ninety-one thousand, five hundred thirty-six".