10787013 has 14 divisors (see below), whose sum is σ = 16174214. Its totient is φ = 7190856.

The previous prime is 10787009. The next prime is 10787047. The reversal of 10787013 is 31078701.

It can be written as a sum of positive squares in only one way, i.e., 8661249 + 2125764 = 2943^2 + 1458^2 .

It is not a de Polignac number, because 10787013 - 2² = 10787009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10787053) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 6670 + ... + 8127.

It is an arithmetic number, because the mean of its divisors is an integer number (1155301).

Almost surely, 2^10787013 is an apocalyptic number.

It is an amenable number.

10787013 is a deficient number, since it is larger than the sum of its proper divisors (5387201).

10787013 is an frugal number, since it uses more digits than its factorization.

10787013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14815 (or 14800 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 10787013 is about 3284.3588415397. The cubic root of 10787013 is about 220.9532534229.

The spelling of 10787013 in words is "ten million, seven hundred eighty-seven thousand, thirteen".