86570387 has 4 divisors (see below), whose sum is σ = 86892480. Its totient is φ = 86248296.

The previous prime is 86570377. The next prime is 86570399. The reversal of 86570387 is 78307568.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86570387 - 2⁸ = 86570131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86570357) 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, 160643 + ... + 161180.

It is an arithmetic number, because the mean of its divisors is an integer number (21723120).

Almost surely, 2^86570387 is an apocalyptic number.

86570387 is a deficient number, since it is larger than the sum of its proper divisors (322093).

86570387 is a wasteful number, since it uses less digits than its factorization.

86570387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322092.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 86570387 is about 9304.3208779577. The cubic root of 86570387 is about 442.3741959924.

The spelling of 86570387 in words is "eighty-six million, five hundred seventy thousand, three hundred eighty-seven".