85506667 has 4 divisors (see below), whose sum is σ = 87817696. Its totient is φ = 83195640.

The previous prime is 85506637. The next prime is 85506671. The reversal of 85506667 is 76660558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85506667 - 2¹¹ = 85504619 is a prime.

It is a super-2 number, since 2×85506667² = 14622780202897778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85506637) 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, 1155459 + ... + 1155532.

It is an arithmetic number, because the mean of its divisors is an integer number (21954424).

Almost surely, 2^85506667 is an apocalyptic number.

85506667 is a deficient number, since it is larger than the sum of its proper divisors (2311029).

85506667 is a wasteful number, since it uses less digits than its factorization.

85506667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311028.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 85506667 is about 9246.9815074975. The cubic root of 85506667 is about 440.5548561414.

The spelling of 85506667 in words is "eighty-five million, five hundred six thousand, six hundred sixty-seven".