85720318 has 8 divisors (see below), whose sum is σ = 128709720. Its totient is φ = 42817080.

The previous prime is 85720309. The next prime is 85720319. The reversal of 85720318 is 81302758.

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

It is a super-2 number, since 2×85720318² = 14695945836042248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85720319) by changing a digit.

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, 18993 + ... + 23068.

It is an arithmetic number, because the mean of its divisors is an integer number (16088715).

Almost surely, 2^85720318 is an apocalyptic number.

85720318 is a deficient number, since it is larger than the sum of its proper divisors (42989402).

85720318 is a wasteful number, since it uses less digits than its factorization.

85720318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43082.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 85720318 is about 9258.5267726567. The cubic root of 85720318 is about 440.9214813511.

Adding to 85720318 its product of nonzero digits (13440), we get a palindrome (85733758).

The spelling of 85720318 in words is "eighty-five million, seven hundred twenty thousand, three hundred eighteen".