86681758 has 4 divisors (see below), whose sum is σ = 130022640. Its totient is φ = 43340878.

The previous prime is 86681747. The next prime is 86681801. The reversal of 86681758 is 85718668.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21670438 + ... + 21670441.

It is an arithmetic number, because the mean of its divisors is an integer number (32505660).

Almost surely, 2^86681758 is an apocalyptic number.

86681758 is a deficient number, since it is larger than the sum of its proper divisors (43340882).

86681758 is a wasteful number, since it uses less digits than its factorization.

86681758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43340881.

The product of its digits is 645120, while the sum is 49.

The square root of 86681758 is about 9310.3038618511. The cubic root of 86681758 is about 442.5638164315.

The spelling of 86681758 in words is "eighty-six million, six hundred eighty-one thousand, seven hundred fifty-eight".