7087513 has 12 divisors (see below), whose sum is σ = 7749540. Its totient is φ = 6473376.

The previous prime is 7087511. The next prime is 7087517. The reversal of 7087513 is 3157807.

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 1172889 = 2432^2 + 1083^2 .

It is not a de Polignac number, because 7087513 - 2¹ = 7087511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7087511) 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 11 ways as a sum of consecutive naturals, for example, 10131 + ... + 10807.

It is an arithmetic number, because the mean of its divisors is an integer number (645795).

Almost surely, 2^7087513 is an apocalyptic number.

It is an amenable number.

7087513 is a deficient number, since it is larger than the sum of its proper divisors (662027).

7087513 is a wasteful number, since it uses less digits than its factorization.

7087513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 7087513 is about 2662.2383439504. The cubic root of 7087513 is about 192.0869921909.

The spelling of 7087513 in words is "seven million, eighty-seven thousand, five hundred thirteen".