85831465 has 8 divisors (see below), whose sum is σ = 103081608. Its totient is φ = 68609280.

The previous prime is 85831463. The next prime is 85831481. The reversal of 85831465 is 56413858.

It can be written as a sum of positive squares in 4 ways, for example, as 896809 + 84934656 = 947^2 + 9216^2 .

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

It is not a de Polignac number, because 85831465 - 2¹ = 85831463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85831463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499 + ... + 13111.

It is an arithmetic number, because the mean of its divisors is an integer number (12885201).

Almost surely, 2^85831465 is an apocalyptic number.

It is an amenable number.

85831465 is a deficient number, since it is larger than the sum of its proper divisors (17250143).

85831465 is a wasteful number, since it uses less digits than its factorization.

85831465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13979.

The product of its digits is 115200, while the sum is 40.

The square root of 85831465 is about 9264.5272410415. The cubic root of 85831465 is about 441.1119687992. Note that the first 3 decimals are identical.

It can be divided in two parts, 858 and 31465, that added together give a palindrome (32323).

The spelling of 85831465 in words is "eighty-five million, eight hundred thirty-one thousand, four hundred sixty-five".