85874840 has 32 divisors (see below), whose sum is σ = 196868880. Its totient is φ = 33700992.

The previous prime is 85874839. The next prime is 85874849. The reversal of 85874840 is 4847858.

It is a junction number, because it is equal to n+sod(n) for n = 85874791 and 85874800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85874849) 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, 18134 + ... + 22373.

Almost surely, 2^85874840 is an apocalyptic number.

It is an amenable number.

85874840 is an abundant number, since it is smaller than the sum of its proper divisors (110994040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85874840 is a wasteful number, since it uses less digits than its factorization.

85874840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40571 (or 40567 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 44.

The square root of 85874840 is about 9266.8678635233. The cubic root of 85874840 is about 441.1862617156.

The spelling of 85874840 in words is "eighty-five million, eight hundred seventy-four thousand, eight hundred forty".