85815067 has 4 divisors (see below), whose sum is σ = 92416240. Its totient is φ = 79213896.

The previous prime is 85815049. The next prime is 85815113. The reversal of 85815067 is 76051858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76051858 = 2 ⋅38025929.

It is a cyclic number.

It is not a de Polignac number, because 85815067 - 2¹⁵ = 85782299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85825067) 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, 3300567 + ... + 3300592.

It is an arithmetic number, because the mean of its divisors is an integer number (23104060).

Almost surely, 2^85815067 is an apocalyptic number.

85815067 is a deficient number, since it is larger than the sum of its proper divisors (6601173).

85815067 is a wasteful number, since it uses less digits than its factorization.

85815067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601172.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 85815067 is about 9263.6422102756. The cubic root of 85815067 is about 441.0838757032.

The spelling of 85815067 in words is "eighty-five million, eight hundred fifteen thousand, sixty-seven".