85040013 has 8 divisors (see below), whose sum is σ = 113436288. Its totient is φ = 56668544.

The previous prime is 85040009. The next prime is 85040017. The reversal of 85040013 is 31004058.

It is an interprime number because it is at equal distance from previous prime (85040009) and next prime (85040017).

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 85040013 - 2² = 85040009 is a prime.

It is a super-2 number, since 2×85040013² = 14463607622080338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85040017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4381 + ... + 13757.

It is an arithmetic number, because the mean of its divisors is an integer number (14179536).

Almost surely, 2^85040013 is an apocalyptic number.

It is an amenable number.

85040013 is a deficient number, since it is larger than the sum of its proper divisors (28396275).

85040013 is a wasteful number, since it uses less digits than its factorization.

85040013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12403.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 85040013 is about 9221.7142115769. The cubic root of 85040013 is about 439.7519486852.

The spelling of 85040013 in words is "eighty-five million, forty thousand, thirteen".