82776955 has 8 divisors (see below), whose sum is σ = 102017232. Its totient is φ = 64431648.

The previous prime is 82776929. The next prime is 82776971. The reversal of 82776955 is 55967728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82776955 - 2⁵ = 82776923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82776899 and 82776908.

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 7 ways as a sum of consecutive naturals, for example, 223537 + ... + 223906.

It is an arithmetic number, because the mean of its divisors is an integer number (12752154).

Almost surely, 2^82776955 is an apocalyptic number.

82776955 is a deficient number, since it is larger than the sum of its proper divisors (19240277).

82776955 is a wasteful number, since it uses less digits than its factorization.

82776955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447485.

The product of its digits is 1058400, while the sum is 49.

The square root of 82776955 is about 9098.1841594903. The cubic root of 82776955 is about 435.8159784393.

The spelling of 82776955 in words is "eighty-two million, seven hundred seventy-six thousand, nine hundred fifty-five".