86470865 has 8 divisors (see below), whose sum is σ = 111747048. Its totient is φ = 63855360.

The previous prime is 86470861. The next prime is 86470897. The reversal of 86470865 is 56807468.

It can be written as a sum of positive squares in 4 ways, for example, as 2876416 + 83594449 = 1696^2 + 9143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86470865 - 2² = 86470861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86470861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665096 + ... + 665225.

It is an arithmetic number, because the mean of its divisors is an integer number (13968381).

Almost surely, 2^86470865 is an apocalyptic number.

It is an amenable number.

86470865 is a deficient number, since it is larger than the sum of its proper divisors (25276183).

86470865 is a wasteful number, since it uses less digits than its factorization.

86470865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330339.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 86470865 is about 9298.9711796521. The cubic root of 86470865 is about 442.2046120353.

The spelling of 86470865 in words is "eighty-six million, four hundred seventy thousand, eight hundred sixty-five".