86217207 has 4 divisors (see below), whose sum is σ = 114956280. Its totient is φ = 57478136.

The previous prime is 86217199. The next prime is 86217233. The reversal of 86217207 is 70271268.

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

It is a cyclic number.

It is not a de Polignac number, because 86217207 - 2³ = 86217199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86213207) 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, 14369532 + ... + 14369537.

It is an arithmetic number, because the mean of its divisors is an integer number (28739070).

Almost surely, 2^86217207 is an apocalyptic number.

86217207 is a deficient number, since it is larger than the sum of its proper divisors (28739073).

86217207 is a wasteful number, since it uses less digits than its factorization.

86217207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28739072.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 86217207 is about 9285.3221268839. The cubic root of 86217207 is about 441.7717934320.

The spelling of 86217207 in words is "eighty-six million, two hundred seventeen thousand, two hundred seven".