85120400686 has 8 divisors (see below), whose sum is σ = 130649917464. Its totient is φ = 41570428200.

The previous prime is 85120400639. The next prime is 85120400707. The reversal of 85120400686 is 68600402158.

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

It is a super-2 number, since 2×85120400686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494885965 + ... + 494886136.

It is an arithmetic number, because the mean of its divisors is an integer number (16331239683).

Almost surely, 2^85120400686 is an apocalyptic number.

85120400686 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

85120400686 is a deficient number, since it is larger than the sum of its proper divisors (45529516778).

85120400686 is a wasteful number, since it uses less digits than its factorization.

85120400686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989772146.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 85120400686 in words is "eighty-five billion, one hundred twenty million, four hundred thousand, six hundred eighty-six".