85709072 has 10 divisors (see below), whose sum is σ = 166061358. Its totient is φ = 42854528.

The previous prime is 85709069. The next prime is 85709083. The reversal of 85709072 is 27090758.

It can be written as a sum of positive squares in only one way, i.e., 79637776 + 6071296 = 8924^2 + 2464^2 .

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 as a sum of consecutive naturals, namely, 2678393 + ... + 2678424.

Almost surely, 2^85709072 is an apocalyptic number.

It is an amenable number.

85709072 is a deficient number, since it is larger than the sum of its proper divisors (80352286).

85709072 is a wasteful number, since it uses less digits than its factorization.

85709072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356825 (or 5356819 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 85709072 is about 9257.9194206906. The cubic root of 85709072 is about 440.9021984088.

The spelling of 85709072 in words is "eighty-five million, seven hundred nine thousand, seventy-two".