10663531 has 4 divisors (see below), whose sum is σ = 10745064. Its totient is φ = 10582000.

The previous prime is 10663529. The next prime is 10663553. The reversal of 10663531 is 13536601.

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

It is a cyclic number.

It is not a de Polignac number, because 10663531 - 2¹ = 10663529 is a prime.

It is a super-2 number, since 2×10663531² = 227421786775922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10663496 and 10663505.

It is not an unprimeable number, because it can be changed into a prime (10663571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40570 + ... + 40831.

It is an arithmetic number, because the mean of its divisors is an integer number (2686266).

Almost surely, 2^10663531 is an apocalyptic number.

10663531 is a deficient number, since it is larger than the sum of its proper divisors (81533).

10663531 is an equidigital number, since it uses as much as digits as its factorization.

10663531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81532.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 10663531 is about 3265.5062394673. The cubic root of 10663531 is about 220.1069108473.

The spelling of 10663531 in words is "ten million, six hundred sixty-three thousand, five hundred thirty-one".