85977471 has 8 divisors (see below), whose sum is σ = 115925040. Its totient is φ = 56674112.

The previous prime is 85977469. The next prime is 85977481. The reversal of 85977471 is 17477958.

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 85977471 - 2¹ = 85977469 is a prime.

It is a super-3 number, since 3×85977471³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85977471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85977481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160740 + ... + 161273.

It is an arithmetic number, because the mean of its divisors is an integer number (14490630).

Almost surely, 2^85977471 is an apocalyptic number.

85977471 is a deficient number, since it is larger than the sum of its proper divisors (29947569).

85977471 is a wasteful number, since it uses less digits than its factorization.

85977471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322105.

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

The square root of 85977471 is about 9272.4037336604. The cubic root of 85977471 is about 441.3619490339.

The spelling of 85977471 in words is "eighty-five million, nine hundred seventy-seven thousand, four hundred seventy-one".