85917747 has 8 divisors (see below), whose sum is σ = 116498880. Its totient is φ = 56307560.

The previous prime is 85917743. The next prime is 85917781. The reversal of 85917747 is 74771958.

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 85917747 - 2² = 85917743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85917696 and 85917705.

It is not an unprimeable number, because it can be changed into a prime (85917743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242529 + ... + 242882.

It is an arithmetic number, because the mean of its divisors is an integer number (14562360).

Almost surely, 2^85917747 is an apocalyptic number.

85917747 is a deficient number, since it is larger than the sum of its proper divisors (30581133).

85917747 is a wasteful number, since it uses less digits than its factorization.

85917747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485473.

The product of its digits is 493920, while the sum is 48.

The square root of 85917747 is about 9269.1826500507. The cubic root of 85917747 is about 441.2597284300.

The spelling of 85917747 in words is "eighty-five million, nine hundred seventeen thousand, seven hundred forty-seven".