85865403 has 8 divisors (see below), whose sum is σ = 123293968. Its totient is φ = 52840224.

The previous prime is 85865383. The next prime is 85865407. The reversal of 85865403 is 30456858.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-85865403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2201677 = 85865403 / (8 + 5 + 8 + 6 + 5 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85865407) 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, 1100800 + ... + 1100877.

It is an arithmetic number, because the mean of its divisors is an integer number (15411746).

Almost surely, 2^85865403 is an apocalyptic number.

85865403 is a deficient number, since it is larger than the sum of its proper divisors (37428565).

85865403 is a wasteful number, since it uses less digits than its factorization.

85865403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201693.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 85865403 is about 9266.3586699415. The cubic root of 85865403 is about 441.1701001046.

It can be divided in two parts, 85865 and 403, that added together give a palindrome (86268).

The spelling of 85865403 in words is "eighty-five million, eight hundred sixty-five thousand, four hundred three".