8130785 has 16 divisors (see below), whose sum is σ = 10670016. Its totient is φ = 5911488.

The previous prime is 8130779. The next prime is 8130791. The reversal of 8130785 is 5870318.

It is an interprime number because it is at equal distance from previous prime (8130779) and next prime (8130791).

It is a cyclic number.

It is not a de Polignac number, because 8130785 - 2⁴ = 8130769 is a prime.

It is a super-2 number, since 2×8130785² = 132219329432450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3422 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (666876).

Almost surely, 2^8130785 is an apocalyptic number.

It is an amenable number.

8130785 is a deficient number, since it is larger than the sum of its proper divisors (2539231).

8130785 is a wasteful number, since it uses less digits than its factorization.

8130785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 8130785 is about 2851.4531383139. The cubic root of 8130785 is about 201.0839892225.

The spelling of 8130785 in words is "eight million, one hundred thirty thousand, seven hundred eighty-five".