85783917 has 8 divisors (see below), whose sum is σ = 120398560. Its totient is φ = 54179280.

The previous prime is 85783891. The next prime is 85783937. The reversal of 85783917 is 71938758.

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

It is not a de Polignac number, because 85783917 - 2¹¹ = 85781869 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 (85783937) 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, 752434 + ... + 752547.

It is an arithmetic number, because the mean of its divisors is an integer number (15049820).

Almost surely, 2^85783917 is an apocalyptic number.

It is an amenable number.

85783917 is a deficient number, since it is larger than the sum of its proper divisors (34614643).

85783917 is a wasteful number, since it uses less digits than its factorization.

85783917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505003.

The product of its digits is 423360, while the sum is 48.

The square root of 85783917 is about 9261.9607535338. The cubic root of 85783917 is about 441.0304995849.

The spelling of 85783917 in words is "eighty-five million, seven hundred eighty-three thousand, nine hundred seventeen".