85710381 has 16 divisors (see below), whose sum is σ = 120199680. Its totient is φ = 54250560.

The previous prime is 85710371. The next prime is 85710431. The reversal of 85710381 is 18301758.

It is not a de Polignac number, because 85710381 - 2⁷ = 85710253 is a prime.

It is a super-2 number, since 2×85710381² = 14692538822330322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85710371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3766 + ... + 13623.

It is an arithmetic number, because the mean of its divisors is an integer number (7512480).

Almost surely, 2^85710381 is an apocalyptic number.

It is an amenable number.

85710381 is a deficient number, since it is larger than the sum of its proper divisors (34489299).

85710381 is a wasteful number, since it uses less digits than its factorization.

85710381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17476.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 85710381 is about 9257.9901166506. The cubic root of 85710381 is about 440.9044429711.

The spelling of 85710381 in words is "eighty-five million, seven hundred ten thousand, three hundred eighty-one".