82776068 has 6 divisors (see below), whose sum is σ = 144858126. Its totient is φ = 41388032.

The previous prime is 82776061. The next prime is 82776073. The reversal of 82776068 is 86067728.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 80317444 + 2458624 = 8962^2 + 1568^2 .

It is not an unprimeable number, because it can be changed into a prime (82776061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10347005 + ... + 10347012.

It is an arithmetic number, because the mean of its divisors is an integer number (24143021).

Almost surely, 2^82776068 is an apocalyptic number.

It is an amenable number.

82776068 is a deficient number, since it is larger than the sum of its proper divisors (62082058).

82776068 is a wasteful number, since it uses less digits than its factorization.

82776068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20694021 (or 20694019 counting only the distinct ones).

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

The square root of 82776068 is about 9098.1354133690. The cubic root of 82776068 is about 435.8144217655.

The spelling of 82776068 in words is "eighty-two million, seven hundred seventy-six thousand, sixty-eight".