81106794 has 24 divisors (see below), whose sum is σ = 181792260. Its totient is φ = 26103168.

The previous prime is 81106793. The next prime is 81106799. The reversal of 81106794 is 49760118.

It can be written as a sum of positive squares in 2 ways, for example, as 78588225 + 2518569 = 8865^2 + 1587^2 .

It is not an unprimeable number, because it can be changed into a prime (81106793) 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, 77167 + ... + 78210.

Almost surely, 2^81106794 is an apocalyptic number.

81106794 is an abundant number, since it is smaller than the sum of its proper divisors (100685466).

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

81106794 is a wasteful number, since it uses less digits than its factorization.

81106794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155414 (or 155411 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 81106794 is about 9005.9310457054. The cubic root of 81106794 is about 432.8649401782.

The spelling of 81106794 in words is "eighty-one million, one hundred six thousand, seven hundred ninety-four".