10687591 has 8 divisors (see below), whose sum is σ = 11078144. Its totient is φ = 10299960.

The previous prime is 10687549. The next prime is 10687601. The reversal of 10687591 is 19578601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10687591 - 2¹⁷ = 10556519 is a prime.

It is a super-2 number, since 2×10687591² = 228449202766562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10687591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10687891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8956 + ... + 10078.

It is an arithmetic number, because the mean of its divisors is an integer number (1384768).

Almost surely, 2^10687591 is an apocalyptic number.

10687591 is a deficient number, since it is larger than the sum of its proper divisors (390553).

10687591 is a wasteful number, since it uses less digits than its factorization.

10687591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 10687591 is about 3269.1881255137. The cubic root of 10687591 is about 220.2723280476.

The spelling of 10687591 in words is "ten million, six hundred eighty-seven thousand, five hundred ninety-one".