85071567 has 16 divisors (see below), whose sum is σ = 129774080. Its totient is φ = 48559392.

The previous prime is 85071563. The next prime is 85071583. The reversal of 85071567 is 76517058.

It is not a de Polignac number, because 85071567 - 2² = 85071563 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 (85071563) 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 15 ways as a sum of consecutive naturals, for example, 25809 + ... + 28917.

It is an arithmetic number, because the mean of its divisors is an integer number (8110880).

Almost surely, 2^85071567 is an apocalyptic number.

85071567 is a deficient number, since it is larger than the sum of its proper divisors (44702513).

85071567 is a wasteful number, since it uses less digits than its factorization.

85071567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 85071567 is about 9223.4249061832. The cubic root of 85071567 is about 439.8063317795.

The spelling of 85071567 in words is "eighty-five million, seventy-one thousand, five hundred sixty-seven".