86819247 has 12 divisors (see below), whose sum is σ = 127772424. Its totient is φ = 56787120.

The previous prime is 86819231. The next prime is 86819281. The reversal of 86819247 is 74291868.

It is not a de Polignac number, because 86819247 - 2⁴ = 86819231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86819207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90529 + ... + 91482.

It is an arithmetic number, because the mean of its divisors is an integer number (10647702).

Almost surely, 2^86819247 is an apocalyptic number.

86819247 is a deficient number, since it is larger than the sum of its proper divisors (40953177).

86819247 is a wasteful number, since it uses less digits than its factorization.

86819247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182070 (or 182067 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 86819247 is about 9317.6846372905. The cubic root of 86819247 is about 442.7976815315.

The spelling of 86819247 in words is "eighty-six million, eight hundred nineteen thousand, two hundred forty-seven".