81068622 has 32 divisors (see below), whose sum is σ = 164706048. Its totient is φ = 26598336.

The previous prime is 81068621. The next prime is 81068639. The reversal of 81068622 is 22686018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81068621) 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 15 ways as a sum of consecutive naturals, for example, 143713 + ... + 144275.

It is an arithmetic number, because the mean of its divisors is an integer number (5147064).

Almost surely, 2^81068622 is an apocalyptic number.

81068622 is an abundant number, since it is smaller than the sum of its proper divisors (83637426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81068622 is a wasteful number, since it uses less digits than its factorization.

81068622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 81068622 is about 9003.8115262371. The cubic root of 81068622 is about 432.7970218509.

The spelling of 81068622 in words is "eighty-one million, sixty-eight thousand, six hundred twenty-two".