85870413 has 6 divisors (see below), whose sum is σ = 124035054. Its totient is φ = 57246936.

The previous prime is 85870399. The next prime is 85870439. The reversal of 85870413 is 31407858.

It can be written as a sum of positive squares in only one way, i.e., 74701449 + 11168964 = 8643^2 + 3342^2 .

It is not a de Polignac number, because 85870413 - 2⁵ = 85870381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85870013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4770570 + ... + 4770587.

It is an arithmetic number, because the mean of its divisors is an integer number (20672509).

Almost surely, 2^85870413 is an apocalyptic number.

It is an amenable number.

85870413 is a deficient number, since it is larger than the sum of its proper divisors (38164641).

85870413 is a wasteful number, since it uses less digits than its factorization.

85870413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541163 (or 9541160 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 85870413 is about 9266.6289987244. The cubic root of 85870413 is about 441.1786802744.

The spelling of 85870413 in words is "eighty-five million, eight hundred seventy thousand, four hundred thirteen".