86437069 has 4 divisors (see below), whose sum is σ = 88773244. Its totient is φ = 84100896.

The previous prime is 86437063. The next prime is 86437079. The reversal of 86437069 is 96073468.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66634569 + 19802500 = 8163^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 86437069 - 2²⁵ = 52882637 is a prime.

It is a super-2 number, since 2×86437069² = 14942733794621522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86437063) 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, 1168032 + ... + 1168105.

It is an arithmetic number, because the mean of its divisors is an integer number (22193311).

Almost surely, 2^86437069 is an apocalyptic number.

It is an amenable number.

86437069 is a deficient number, since it is larger than the sum of its proper divisors (2336175).

86437069 is a wasteful number, since it uses less digits than its factorization.

86437069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336174.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 86437069 is about 9297.1538117856. The cubic root of 86437069 is about 442.1469945766.

The spelling of 86437069 in words is "eighty-six million, four hundred thirty-seven thousand, sixty-nine".