85645511 has 8 divisors (see below), whose sum is σ = 98313600. Its totient is φ = 73085688.

The previous prime is 85645493. The next prime is 85645519. The reversal of 85645511 is 11554658.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85645511 - 2⁶ = 85645447 is a prime.

It is a super-2 number, since 2×85645511² = 14670307108902242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85645519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25361 + ... + 28538.

It is an arithmetic number, because the mean of its divisors is an integer number (12289200).

Almost surely, 2^85645511 is an apocalyptic number.

85645511 is a deficient number, since it is larger than the sum of its proper divisors (12668089).

85645511 is a wasteful number, since it uses less digits than its factorization.

85645511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54133.

The product of its digits is 24000, while the sum is 35.

The square root of 85645511 is about 9254.4859932900. The cubic root of 85645511 is about 440.7931818861.

The spelling of 85645511 in words is "eighty-five million, six hundred forty-five thousand, five hundred eleven".