81277106 has 8 divisors (see below), whose sum is σ = 122102640. Its totient is φ = 40576228.

The previous prime is 81277103. The next prime is 81277121. The reversal of 81277106 is 60177218.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81277103) 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, 29516 + ... + 32151.

It is an arithmetic number, because the mean of its divisors is an integer number (15262830).

Almost surely, 2^81277106 is an apocalyptic number.

81277106 is a deficient number, since it is larger than the sum of its proper divisors (40825534).

81277106 is a wasteful number, since it uses less digits than its factorization.

81277106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62328.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 81277106 is about 9015.3816336304. The cubic root of 81277106 is about 433.1677119865.

The spelling of 81277106 in words is "eighty-one million, two hundred seventy-seven thousand, one hundred six".