83070985 has 16 divisors (see below), whose sum is σ = 101210112. Its totient is φ = 65448000.

The previous prime is 83070973. The next prime is 83070991. The reversal of 83070985 is 58907038.

It is not a de Polignac number, because 83070985 - 2²¹ = 80973833 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 136552 + ... + 137158.

It is an arithmetic number, because the mean of its divisors is an integer number (6325632).

Almost surely, 2^83070985 is an apocalyptic number.

It is an amenable number.

83070985 is a deficient number, since it is larger than the sum of its proper divisors (18139127).

83070985 is a wasteful number, since it uses less digits than its factorization.

83070985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 83070985 is about 9114.3285545343. The cubic root of 83070985 is about 436.3313857623.

The spelling of 83070985 in words is "eighty-three million, seventy thousand, nine hundred eighty-five".