82105706 has 4 divisors (see below), whose sum is σ = 123158562. Its totient is φ = 41052852.

The previous prime is 82105703. The next prime is 82105721. The reversal of 82105706 is 60750128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 81739681 + 366025 = 9041^2 + 605^2 .

It is a pancake number, because a pancake can be divided into 82105706 parts by 12814 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (82105703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20526425 + ... + 20526428.

Almost surely, 2^82105706 is an apocalyptic number.

82105706 is a deficient number, since it is larger than the sum of its proper divisors (41052856).

82105706 is a wasteful number, since it uses less digits than its factorization.

82105706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41052855.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 82105706 is about 9061.2198957977. The cubic root of 82105706 is about 434.6347504334.

The spelling of 82105706 in words is "eighty-two million, one hundred five thousand, seven hundred six".