86652191 has 4 divisors (see below), whose sum is σ = 88287192. Its totient is φ = 85017192.

The previous prime is 86652169. The next prime is 86652193. The reversal of 86652191 is 19125668.

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 86652191 - 2¹⁴ = 86635807 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 (86652193) 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, 817421 + ... + 817526.

It is an arithmetic number, because the mean of its divisors is an integer number (22071798).

Almost surely, 2^86652191 is an apocalyptic number.

86652191 is a deficient number, since it is larger than the sum of its proper divisors (1635001).

86652191 is a wasteful number, since it uses less digits than its factorization.

86652191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635000.

The product of its digits is 25920, while the sum is 38.

The square root of 86652191 is about 9308.7158620295. The cubic root of 86652191 is about 442.5134914545.

The spelling of 86652191 in words is "eighty-six million, six hundred fifty-two thousand, one hundred ninety-one".