10505687 has 4 divisors (see below), whose sum is σ = 10962480. Its totient is φ = 10048896.

The previous prime is 10505653. The next prime is 10505699. The reversal of 10505687 is 78650501.

10505687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78650501 = 23 ⋅3419587.

It is a cyclic number.

It is not a de Polignac number, because 10505687 - 2⁶ = 10505623 is a prime.

It is a super-2 number, since 2×10505687² = 220738918683938, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505617) 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, 228362 + ... + 228407.

It is an arithmetic number, because the mean of its divisors is an integer number (2740620).

Almost surely, 2^10505687 is an apocalyptic number.

10505687 is a deficient number, since it is larger than the sum of its proper divisors (456793).

10505687 is an equidigital number, since it uses as much as digits as its factorization.

10505687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456792.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 10505687 is about 3241.2477535665. The cubic root of 10505687 is about 219.0154837089.

The spelling of 10505687 in words is "ten million, five hundred five thousand, six hundred eighty-seven".