82640708 has 6 divisors (see below), whose sum is σ = 144621246. Its totient is φ = 41320352.

The previous prime is 82640687. The next prime is 82640717. The reversal of 82640708 is 80704628.

It can be written as a sum of positive squares in only one way, i.e., 78712384 + 3928324 = 8872^2 + 1982^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10330085 + ... + 10330092.

It is an arithmetic number, because the mean of its divisors is an integer number (24103541).

Almost surely, 2^82640708 is an apocalyptic number.

It is an amenable number.

82640708 is a deficient number, since it is larger than the sum of its proper divisors (61980538).

82640708 is a wasteful number, since it uses less digits than its factorization.

82640708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20660181 (or 20660179 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 82640708 is about 9090.6934828978. The cubic root of 82640708 is about 435.5767362187.

The spelling of 82640708 in words is "eighty-two million, six hundred forty thousand, seven hundred eight".