82870885 has 8 divisors (see below), whose sum is σ = 99509400. Its totient is φ = 66253824.

The previous prime is 82870873. The next prime is 82870891. The reversal of 82870885 is 58807828.

It can be written as a sum of positive squares in 4 ways, for example, as 10246401 + 72624484 = 3201^2 + 8522^2 .

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 82870885 - 2¹¹ = 82868837 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4941 + ... + 13789.

It is an arithmetic number, because the mean of its divisors is an integer number (12438675).

Almost surely, 2^82870885 is an apocalyptic number.

It is an amenable number.

82870885 is a deficient number, since it is larger than the sum of its proper divisors (16638515).

82870885 is a wasteful number, since it uses less digits than its factorization.

82870885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10727.

The product of its (nonzero) digits is 286720, while the sum is 46.

The square root of 82870885 is about 9103.3447149935. The cubic root of 82870885 is about 435.9807615028.

The spelling of 82870885 in words is "eighty-two million, eight hundred seventy thousand, eight hundred eighty-five".