81327614 has 4 divisors (see below), whose sum is σ = 121991424. Its totient is φ = 40663806.

The previous prime is 81327611. The next prime is 81327647. The reversal of 81327614 is 41672318.

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

It is a super-2 number, since 2×81327614² = 13228361597865992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81327611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20331902 + ... + 20331905.

It is an arithmetic number, because the mean of its divisors is an integer number (30497856).

Almost surely, 2^81327614 is an apocalyptic number.

81327614 is a deficient number, since it is larger than the sum of its proper divisors (40663810).

81327614 is a wasteful number, since it uses less digits than its factorization.

81327614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40663809.

The product of its digits is 8064, while the sum is 32.

The square root of 81327614 is about 9018.1824111070. The cubic root of 81327614 is about 433.2574211534.

The spelling of 81327614 in words is "eighty-one million, three hundred twenty-seven thousand, six hundred fourteen".