81416206 has 8 divisors (see below), whose sum is σ = 125425080. Its totient is φ = 39607848.

The previous prime is 81416191. The next prime is 81416207. The reversal of 81416206 is 60261418.

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 (81416207) 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, 550036 + ... + 550183.

It is an arithmetic number, because the mean of its divisors is an integer number (15678135).

Almost surely, 2^81416206 is an apocalyptic number.

81416206 is a deficient number, since it is larger than the sum of its proper divisors (44008874).

81416206 is a wasteful number, since it uses less digits than its factorization.

81416206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100258.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 81416206 is about 9023.0929287024. The cubic root of 81416206 is about 433.4146830836.

It can be divided in two parts, 814 and 16206, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 81416206 in words is "eighty-one million, four hundred sixteen thousand, two hundred six".