85865401 has 4 divisors (see below), whose sum is σ = 85966452. Its totient is φ = 85764352.

The previous prime is 85865383. The next prime is 85865407. The reversal of 85865401 is 10456858.

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 74649600 + 11215801 = 8640^2 + 3349^2 .

It is a cyclic number.

It is not a de Polignac number, because 85865401 - 2¹³ = 85857209 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 49240 + ... + 50953.

It is an arithmetic number, because the mean of its divisors is an integer number (21491613).

Almost surely, 2^85865401 is an apocalyptic number.

It is an amenable number.

85865401 is a deficient number, since it is larger than the sum of its proper divisors (101051).

85865401 is a wasteful number, since it uses less digits than its factorization.

85865401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101050.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 85865401 is about 9266.3585620242. The cubic root of 85865401 is about 441.1700966793.

The spelling of 85865401 in words is "eighty-five million, eight hundred sixty-five thousand, four hundred one".