81334486 has 8 divisors (see below), whose sum is σ = 127306224. Its totient is φ = 38899080.

The previous prime is 81334471. The next prime is 81334507. The reversal of 81334486 is 68443318.

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

It is a super-2 number, since 2×81334486² = 13230597225768392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884025 + ... + 884116.

It is an arithmetic number, because the mean of its divisors is an integer number (15913278).

Almost surely, 2^81334486 is an apocalyptic number.

81334486 is a deficient number, since it is larger than the sum of its proper divisors (45971738).

81334486 is a wasteful number, since it uses less digits than its factorization.

81334486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768166.

The product of its digits is 55296, while the sum is 37.

The square root of 81334486 is about 9018.5634110982. The cubic root of 81334486 is about 433.2696239014.

The spelling of 81334486 in words is "eighty-one million, three hundred thirty-four thousand, four hundred eighty-six".