86698217 has 4 divisors (see below), whose sum is σ = 87217536. Its totient is φ = 86178900.

The previous prime is 86698211. The next prime is 86698219. The reversal of 86698217 is 71289668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86698217 - 2¹² = 86694121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86698211) 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, 259409 + ... + 259742.

It is an arithmetic number, because the mean of its divisors is an integer number (21804384).

Almost surely, 2^86698217 is an apocalyptic number.

It is an amenable number.

86698217 is a deficient number, since it is larger than the sum of its proper divisors (519319).

86698217 is a wasteful number, since it uses less digits than its factorization.

86698217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519318.

The product of its digits is 290304, while the sum is 47.

The square root of 86698217 is about 9311.1877330446. The cubic root of 86698217 is about 442.5918257730.

The spelling of 86698217 in words is "eighty-six million, six hundred ninety-eight thousand, two hundred seventeen".