86967709 has 4 divisors (see below), whose sum is σ = 87074460. Its totient is φ = 86860960.

The previous prime is 86967641. The next prime is 86967739. The reversal of 86967709 is 90776968.

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 56475225 + 30492484 = 7515^2 + 5522^2 .

It is a cyclic number.

It is not a de Polignac number, because 86967709 - 2¹⁷ = 86836637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86967739) 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, 52144 + ... + 53785.

It is an arithmetic number, because the mean of its divisors is an integer number (21768615).

Almost surely, 2^86967709 is an apocalyptic number.

It is an amenable number.

86967709 is a deficient number, since it is larger than the sum of its proper divisors (106751).

86967709 is a wasteful number, since it uses less digits than its factorization.

86967709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106750.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 86967709 is about 9325.6479131479. The cubic root of 86967709 is about 443.0499343285.

The spelling of 86967709 in words is "eighty-six million, nine hundred sixty-seven thousand, seven hundred nine".