81846611 has 12 divisors (see below), whose sum is σ = 103865400. Its totient is φ = 63776160.

The previous prime is 81846593. The next prime is 81846631. The reversal of 81846611 is 11664818.

It is a happy number.

It is not a de Polignac number, because 81846611 - 2¹⁰ = 81845587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81846631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75386 + ... + 76463.

It is an arithmetic number, because the mean of its divisors is an integer number (8655450).

Almost surely, 2^81846611 is an apocalyptic number.

81846611 is a deficient number, since it is larger than the sum of its proper divisors (22018789).

81846611 is a wasteful number, since it uses less digits than its factorization.

81846611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151874 (or 151867 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 81846611 is about 9046.9116829999. The cubic root of 81846611 is about 434.1770869418.

The spelling of 81846611 in words is "eighty-one million, eight hundred forty-six thousand, six hundred eleven".