9990675 has 72 divisors (see below), whose sum is σ = 19842480. Its totient is φ = 4924800.

The previous prime is 9990667. The next prime is 9990677. The reversal of 9990675 is 5760999.

It is not a de Polignac number, because 9990675 - 2³ = 9990667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9990675.

It is not an unprimeable number, because it can be changed into a prime (9990677) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 243655 + ... + 243695.

It is an arithmetic number, because the mean of its divisors is an integer number (275590).

Almost surely, 2^9990675 is an apocalyptic number.

9990675 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

9990675 is a deficient number, since it is larger than the sum of its proper divisors (9851805).

9990675 is a wasteful number, since it uses less digits than its factorization.

9990675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 9990675 is about 3160.8029043267. The cubic root of 9990675 is about 215.3764811652.

The spelling of 9990675 in words is "nine million, nine hundred ninety thousand, six hundred seventy-five".