82779695 has 4 divisors (see below), whose sum is σ = 99335640. Its totient is φ = 66223752.

The previous prime is 82779679. The next prime is 82779707. The reversal of 82779695 is 59697728.

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

It is a cyclic number.

It is not a de Polignac number, because 82779695 - 2⁴ = 82779679 is a prime.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 8277965 + ... + 8277974.

It is an arithmetic number, because the mean of its divisors is an integer number (24833910).

Almost surely, 2^82779695 is an apocalyptic number.

82779695 is a deficient number, since it is larger than the sum of its proper divisors (16555945).

82779695 is a wasteful number, since it uses less digits than its factorization.

82779695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16555944.

The product of its digits is 1905120, while the sum is 53.

The square root of 82779695 is about 9098.3347377418. The cubic root of 82779695 is about 435.8207870345.

The spelling of 82779695 in words is "eighty-two million, seven hundred seventy-nine thousand, six hundred ninety-five".