85009623 has 4 divisors (see below), whose sum is σ = 113346168. Its totient is φ = 56673080.

The previous prime is 85009621. The next prime is 85009627. The reversal of 85009623 is 32690058.

It is a happy number.

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 85009623 - 2¹ = 85009621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85009621) 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, 14168268 + ... + 14168273.

It is an arithmetic number, because the mean of its divisors is an integer number (28336542).

Almost surely, 2^85009623 is an apocalyptic number.

85009623 is a deficient number, since it is larger than the sum of its proper divisors (28336545).

85009623 is a wasteful number, since it uses less digits than its factorization.

85009623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28336544.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 85009623 is about 9220.0663229719. The cubic root of 85009623 is about 439.6995590179.

The spelling of 85009623 in words is "eighty-five million, nine thousand, six hundred twenty-three".