86950561 has 4 divisors (see below), whose sum is σ = 87034500. Its totient is φ = 86866624.

The previous prime is 86950547. The next prime is 86950571. The reversal of 86950561 is 16505968.

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 74390625 + 12559936 = 8625^2 + 3544^2 .

It is a cyclic number.

It is not a de Polignac number, because 86950561 - 2⁷ = 86950433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86950541) 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, 40396 + ... + 42493.

It is an arithmetic number, because the mean of its divisors is an integer number (21758625).

Almost surely, 2^86950561 is an apocalyptic number.

It is an amenable number.

86950561 is a deficient number, since it is larger than the sum of its proper divisors (83939).

86950561 is a wasteful number, since it uses less digits than its factorization.

86950561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83938.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 86950561 is about 9324.7284678965. The cubic root of 86950561 is about 443.0208127163.

The spelling of 86950561 in words is "eighty-six million, nine hundred fifty thousand, five hundred sixty-one".