86611505 has 8 divisors (see below), whose sum is σ = 104197992. Its totient is φ = 69113088.

The previous prime is 86611501. The next prime is 86611513. The reversal of 86611505 is 50511668.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33131536 + 53479969 = 5756^2 + 7313^2 .

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 86611505 - 2² = 86611501 is a prime.

It is a super-3 number, since 3×86611505³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86611501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19832 + ... + 23801.

It is an arithmetic number, because the mean of its divisors is an integer number (13024749).

Almost surely, 2^86611505 is an apocalyptic number.

It is an amenable number.

86611505 is a deficient number, since it is larger than the sum of its proper divisors (17586487).

86611505 is a wasteful number, since it uses less digits than its factorization.

86611505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44035.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 86611505 is about 9306.5302341958. The cubic root of 86611505 is about 442.4442224906. Note that the first 3 decimals are identical.

The spelling of 86611505 in words is "eighty-six million, six hundred eleven thousand, five hundred five".