81246086 has 8 divisors (see below), whose sum is σ = 122153184. Its totient is φ = 40528360.

The previous prime is 81246079. The next prime is 81246089. The reversal of 81246086 is 68064218.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81246089) 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, 46265 + ... + 47988.

It is an arithmetic number, because the mean of its divisors is an integer number (15269148).

Almost surely, 2^81246086 is an apocalyptic number.

81246086 is a deficient number, since it is larger than the sum of its proper divisors (40907098).

81246086 is a wasteful number, since it uses less digits than its factorization.

81246086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94686.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 81246086 is about 9013.6610763884. The cubic root of 81246086 is about 433.1125977693.

The spelling of 81246086 in words is "eighty-one million, two hundred forty-six thousand, eighty-six".