10643587 has 4 divisors (see below), whose sum is σ = 10650256. Its totient is φ = 10636920.

The previous prime is 10643561. The next prime is 10643593. The reversal of 10643587 is 78534601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78534601 = 6079 ⋅12919.

It is a cyclic number.

It is not a de Polignac number, because 10643587 - 2⁷ = 10643459 is a prime.

It is a super-2 number, since 2×10643587² = 226571888453138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10643527) 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, 637 + ... + 4657.

It is an arithmetic number, because the mean of its divisors is an integer number (2662564).

Almost surely, 2^10643587 is an apocalyptic number.

10643587 is a deficient number, since it is larger than the sum of its proper divisors (6669).

10643587 is an equidigital number, since it uses as much as digits as its factorization.

10643587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 10643587 is about 3262.4510724301. The cubic root of 10643587 is about 219.9696032384.

The spelling of 10643587 in words is "ten million, six hundred forty-three thousand, five hundred eighty-seven".