854593640 has 16 divisors (see below), whose sum is σ = 1922835780. Its totient is φ = 341837440.

The previous prime is 854593637. The next prime is 854593651. The reversal of 854593640 is 46395458.

It can be written as a sum of positive squares in 2 ways, for example, as 770284516 + 84309124 = 27754^2 + 9182^2 .

It is a junction number, because it is equal to n+sod(n) for n = 854593591 and 854593600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10682381 + ... + 10682460.

Almost surely, 2^854593640 is an apocalyptic number.

It is an amenable number.

854593640 is an abundant number, since it is smaller than the sum of its proper divisors (1068242140).

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

854593640 is a wasteful number, since it uses less digits than its factorization.

854593640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21364852 (or 21364848 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 854593640 is about 29233.4335992199. The cubic root of 854593640 is about 948.9716073692.

The spelling of 854593640 in words is "eight hundred fifty-four million, five hundred ninety-three thousand, six hundred forty".