811771068 has 48 divisors (see below), whose sum is σ = 1912135680. Its totient is φ = 268032384.

The previous prime is 811771061. The next prime is 811771099. The reversal of 811771068 is 860177118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811771061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634053 + ... + 635331.

It is an arithmetic number, because the mean of its divisors is an integer number (39836160).

Almost surely, 2^811771068 is an apocalyptic number.

It is an amenable number.

811771068 is an abundant number, since it is smaller than the sum of its proper divisors (1100364612).

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

811771068 is a wasteful number, since it uses less digits than its factorization.

811771068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1744 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 39.

The square root of 811771068 is about 28491.5964452679. The cubic root of 811771068 is about 932.8486547566.

The spelling of 811771068 in words is "eight hundred eleven million, seven hundred seventy-one thousand, sixty-eight".