86561814 has 8 divisors (see below), whose sum is σ = 173123640. Its totient is φ = 28853936.

The previous prime is 86561809. The next prime is 86561819. The reversal of 86561814 is 41816568.

It is an interprime number because it is at equal distance from previous prime (86561809) and next prime (86561819).

It is a sphenic number, since it is the product of 3 distinct primes.

86561814 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86561819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7213479 + ... + 7213490.

It is an arithmetic number, because the mean of its divisors is an integer number (21640455).

Almost surely, 2^86561814 is an apocalyptic number.

86561814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86561814 is a wasteful number, since it uses less digits than its factorization.

86561814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14426974.

The product of its digits is 46080, while the sum is 39.

The square root of 86561814 is about 9303.8601666190. The cubic root of 86561814 is about 442.3595928496.

The spelling of 86561814 in words is "eighty-six million, five hundred sixty-one thousand, eight hundred fourteen".