85015813 has 8 divisors (see below), whose sum is σ = 85669632. Its totient is φ = 84364896.

The previous prime is 85015789. The next prime is 85015817. The reversal of 85015813 is 31851058.

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 85015813 - 2¹³ = 85007621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85015817) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 137481 + ... + 138097.

It is an arithmetic number, because the mean of its divisors is an integer number (10708704).

Almost surely, 2^85015813 is an apocalyptic number.

It is an amenable number.

85015813 is a deficient number, since it is larger than the sum of its proper divisors (653819).

85015813 is a wasteful number, since it uses less digits than its factorization.

85015813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 85015813 is about 9220.4019977439. The cubic root of 85015813 is about 439.7102310419.

The spelling of 85015813 in words is "eighty-five million, fifteen thousand, eight hundred thirteen".