85480840 has 16 divisors (see below), whose sum is σ = 192331980. Its totient is φ = 34192320.

The previous prime is 85480823. The next prime is 85480873. The reversal of 85480840 is 4808458.

It can be written as a sum of positive squares in 2 ways, for example, as 78605956 + 6874884 = 8866^2 + 2622^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85480840.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068471 + ... + 1068550.

Almost surely, 2^85480840 is an apocalyptic number.

It is an amenable number.

85480840 is an abundant number, since it is smaller than the sum of its proper divisors (106851140).

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

85480840 is a wasteful number, since it uses less digits than its factorization.

85480840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137032 (or 2137028 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 37.

The square root of 85480840 is about 9245.5848922607. The cubic root of 85480840 is about 440.5104956393.

It can be divided in two parts, 85480 and 840, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 85480840 in words is "eighty-five million, four hundred eighty thousand, eight hundred forty".