82687706 has 4 divisors (see below), whose sum is σ = 124031562. Its totient is φ = 41343852.

The previous prime is 82687681. The next prime is 82687721. The reversal of 82687706 is 60778628.

It is a happy number.

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., 72505225 + 10182481 = 8515^2 + 3191^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20671925 + ... + 20671928.

Almost surely, 2^82687706 is an apocalyptic number.

82687706 is a deficient number, since it is larger than the sum of its proper divisors (41343856).

82687706 is a wasteful number, since it uses less digits than its factorization.

82687706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41343855.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 82687706 is about 9093.2780667920. The cubic root of 82687706 is about 435.6592918038.

The spelling of 82687706 in words is "eighty-two million, six hundred eighty-seven thousand, seven hundred six".