86906247 has 16 divisors (see below), whose sum is σ = 122171520. Its totient is φ = 54799200.

The previous prime is 86906231. The next prime is 86906263. The reversal of 86906247 is 74260968.

It is an interprime number because it is at equal distance from previous prime (86906231) and next prime (86906263).

It is not a de Polignac number, because 86906247 - 2⁴ = 86906231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86906199 and 86906208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86906207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66672 + ... + 67962.

It is an arithmetic number, because the mean of its divisors is an integer number (7635720).

Almost surely, 2^86906247 is an apocalyptic number.

86906247 is a deficient number, since it is larger than the sum of its proper divisors (35265273).

86906247 is a wasteful number, since it uses less digits than its factorization.

86906247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 86906247 is about 9322.3520100884. The cubic root of 86906247 is about 442.9455386750.

It can be divided in two parts, 86906 and 247, that added together give a triangular number (87153 = T₄₁₇).

The spelling of 86906247 in words is "eighty-six million, nine hundred six thousand, two hundred forty-seven".