85374647 has 4 divisors (see below), whose sum is σ = 86254896. Its totient is φ = 84494400.

The previous prime is 85374613. The next prime is 85374649. The reversal of 85374647 is 74647358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74647358 = 2 ⋅37323679.

It is a cyclic number.

It is not a de Polignac number, because 85374647 - 2¹⁰ = 85373623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85374598 and 85374607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85374649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439979 + ... + 440172.

It is an arithmetic number, because the mean of its divisors is an integer number (21563724).

Almost surely, 2^85374647 is an apocalyptic number.

85374647 is a deficient number, since it is larger than the sum of its proper divisors (880249).

85374647 is an equidigital number, since it uses as much as digits as its factorization.

85374647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880248.

The product of its digits is 564480, while the sum is 44.

The square root of 85374647 is about 9239.8402042460. The cubic root of 85374647 is about 440.3280043905.

The spelling of 85374647 in words is "eighty-five million, three hundred seventy-four thousand, six hundred forty-seven".