86520247 has 8 divisors (see below), whose sum is σ = 95581440. Its totient is φ = 77658360.

The previous prime is 86520229. The next prime is 86520251. The reversal of 86520247 is 74202568.

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

It is a cyclic number.

It is not a de Polignac number, because 86520247 - 2²³ = 78131639 is a prime.

It is a super-3 number, since 3×86520247³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86520047) 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 7 ways as a sum of consecutive naturals, for example, 48913 + ... + 50650.

It is an arithmetic number, because the mean of its divisors is an integer number (11947680).

Almost surely, 2^86520247 is an apocalyptic number.

86520247 is a deficient number, since it is larger than the sum of its proper divisors (9061193).

86520247 is a wasteful number, since it uses less digits than its factorization.

86520247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99653.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 86520247 is about 9301.6260406447. The cubic root of 86520247 is about 442.2887744584.

It can be divided in two parts, 865 and 20247, that added together give a palindrome (21112).

The spelling of 86520247 in words is "eighty-six million, five hundred twenty thousand, two hundred forty-seven".