85378471 has 8 divisors (see below), whose sum is σ = 90679824. Its totient is φ = 80108160.

The previous prime is 85378453. The next prime is 85378477. The reversal of 85378471 is 17487358.

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 85378471 - 2⁹ = 85377959 is a prime.

It is a super-3 number, since 3×85378471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85378477) 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, 1960 + ... + 13213.

It is an arithmetic number, because the mean of its divisors is an integer number (11334978).

Almost surely, 2^85378471 is an apocalyptic number.

85378471 is a deficient number, since it is larger than the sum of its proper divisors (5301353).

85378471 is a wasteful number, since it uses less digits than its factorization.

85378471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15521.

The product of its digits is 188160, while the sum is 43.

The square root of 85378471 is about 9240.0471319144. The cubic root of 85378471 is about 440.3345785091.

It can be divided in two parts, 85378 and 471, that added together give a square (85849 = 293²).

The spelling of 85378471 in words is "eighty-five million, three hundred seventy-eight thousand, four hundred seventy-one".