86881505 has 4 divisors (see below), whose sum is σ = 104257812. Its totient is φ = 69505200.

The previous prime is 86881489. The next prime is 86881523. The reversal of 86881505 is 50518868.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38328481 + 48553024 = 6191^2 + 6968^2 .

It is not a de Polignac number, because 86881505 - 2⁴ = 86881489 is a prime.

It is a super-2 number, since 2×86881505² = 15096791822130050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8688146 + ... + 8688155.

It is an arithmetic number, because the mean of its divisors is an integer number (26064453).

Almost surely, 2^86881505 is an apocalyptic number.

It is an amenable number.

86881505 is a deficient number, since it is larger than the sum of its proper divisors (17376307).

86881505 is a wasteful number, since it uses less digits than its factorization.

86881505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17376306.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 86881505 is about 9321.0248900000. The cubic root of 86881505 is about 442.9034995079.

The spelling of 86881505 in words is "eighty-six million, eight hundred eighty-one thousand, five hundred five".