85942665 has 12 divisors (see below), whose sum is σ = 148967364. Its totient is φ = 45836064.

The previous prime is 85942663. The next prime is 85942669. The reversal of 85942665 is 56624958.

It can be written as a sum of positive squares in 2 ways, for example, as 49617936 + 36324729 = 7044^2 + 6027^2 .

It is not a de Polignac number, because 85942665 - 2¹ = 85942663 is a prime.

It is a super-2 number, since 2×85942665² = 14772283334604450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1909837 = 85942665 / (8 + 5 + 9 + 4 + 2 + 6 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 85942665.

It is not an unprimeable number, because it can be changed into a prime (85942663) 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 11 ways as a sum of consecutive naturals, for example, 954874 + ... + 954963.

It is an arithmetic number, because the mean of its divisors is an integer number (12413947).

Almost surely, 2^85942665 is an apocalyptic number.

It is an amenable number.

85942665 is a deficient number, since it is larger than the sum of its proper divisors (63024699).

85942665 is a wasteful number, since it uses less digits than its factorization.

85942665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909848 (or 1909845 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 85942665 is about 9270.5266840671. The cubic root of 85942665 is about 441.3023825867.

The spelling of 85942665 in words is "eighty-five million, nine hundred forty-two thousand, six hundred sixty-five".