85032813 has 4 divisors (see below), whose sum is σ = 113377088. Its totient is φ = 56688540.

The previous prime is 85032769. The next prime is 85032821. The reversal of 85032813 is 31823058.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85032813 - 2⁸ = 85032557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85032413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14172133 + ... + 14172138.

It is an arithmetic number, because the mean of its divisors is an integer number (28344272).

Almost surely, 2^85032813 is an apocalyptic number.

It is an amenable number.

85032813 is a deficient number, since it is larger than the sum of its proper divisors (28344275).

85032813 is a wasteful number, since it uses less digits than its factorization.

85032813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28344274.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 85032813 is about 9221.3238203633. The cubic root of 85032813 is about 439.7395376516.

The spelling of 85032813 in words is "eighty-five million, thirty-two thousand, eight hundred thirteen".