85684402 has 8 divisors (see below), whose sum is σ = 130705200. Its totient is φ = 42116004.

The previous prime is 85684381. The next prime is 85684409. The reversal of 85684402 is 20448658.

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

It is not an unprimeable number, because it can be changed into a prime (85684409) 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 3 ways as a sum of consecutive naturals, for example, 362952 + ... + 363187.

It is an arithmetic number, because the mean of its divisors is an integer number (16338150).

Almost surely, 2^85684402 is an apocalyptic number.

85684402 is a deficient number, since it is larger than the sum of its proper divisors (45020798).

85684402 is a wasteful number, since it uses less digits than its factorization.

85684402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726200.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 85684402 is about 9256.5869520034. The cubic root of 85684402 is about 440.8598921094.

It can be divided in two parts, 856 and 84402, that added together give a palindrome (85258).

The spelling of 85684402 in words is "eighty-five million, six hundred eighty-four thousand, four hundred two".