86609145 has 32 divisors (see below), whose sum is σ = 165261312. Its totient is φ = 37870272.

The previous prime is 86609143. The next prime is 86609147. The reversal of 86609145 is 54190668.

It is an interprime number because it is at equal distance from previous prime (86609143) and next prime (86609147).

It is not a de Polignac number, because 86609145 - 2¹ = 86609143 is a prime.

It is a super-2 number, since 2×86609145² = 15002287995262050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86609143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15517 + ... + 20346.

It is an arithmetic number, because the mean of its divisors is an integer number (5164416).

Almost surely, 2^86609145 is an apocalyptic number.

It is an amenable number.

86609145 is a deficient number, since it is larger than the sum of its proper divisors (78652167).

86609145 is a wasteful number, since it uses less digits than its factorization.

86609145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35901.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 86609145 is about 9306.4034406424. The cubic root of 86609145 is about 442.4402038642.

The spelling of 86609145 in words is "eighty-six million, six hundred nine thousand, one hundred forty-five".