86529761 has 4 divisors (see below), whose sum is σ = 88162452. Its totient is φ = 84897072.

The previous prime is 86529757. The next prime is 86529767. The reversal of 86529761 is 16792568.

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 20611600 + 65918161 = 4540^2 + 8119^2 .

It is a cyclic number.

It is not a de Polignac number, because 86529761 - 2² = 86529757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86529767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816266 + ... + 816371.

It is an arithmetic number, because the mean of its divisors is an integer number (22040613).

Almost surely, 2^86529761 is an apocalyptic number.

It is an amenable number.

86529761 is a deficient number, since it is larger than the sum of its proper divisors (1632691).

86529761 is a wasteful number, since it uses less digits than its factorization.

86529761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632690.

The product of its digits is 181440, while the sum is 44.

The square root of 86529761 is about 9302.1374425451. The cubic root of 86529761 is about 442.3049856202.

The spelling of 86529761 in words is "eighty-six million, five hundred twenty-nine thousand, seven hundred sixty-one".