86570513 has 4 divisors (see below), whose sum is σ = 87789888. Its totient is φ = 85351140.

The previous prime is 86570503. The next prime is 86570521. The reversal of 86570513 is 31507568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86570513 - 2¹⁰ = 86569489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86570503) 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, 609581 + ... + 609722.

It is an arithmetic number, because the mean of its divisors is an integer number (21947472).

Almost surely, 2^86570513 is an apocalyptic number.

It is an amenable number.

86570513 is a deficient number, since it is larger than the sum of its proper divisors (1219375).

86570513 is a wasteful number, since it uses less digits than its factorization.

86570513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219374.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 86570513 is about 9304.3276490029. The cubic root of 86570513 is about 442.3744106121.

The spelling of 86570513 in words is "eighty-six million, five hundred seventy thousand, five hundred thirteen".