854860644 has 81 divisors (see below), whose sum is σ = 2380575379. Its totient is φ = 258463920.

The previous prime is 854860639. The next prime is 854860663. The reversal of 854860644 is 446068458.

The square root of 854860644 is 29238.

It is a perfect power (a square), and thus also a powerful number.

854860644 is a `hidden beast` number, since 8 + 548 + 60 + 6 + 44 = 666.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 854860644.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1929487 + ... + 1929929.

Almost surely, 2^854860644 is an apocalyptic number.

854860644 is the 29238-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 854860644

854860644 is an abundant number, since it is smaller than the sum of its proper divisors (1525714735).

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

854860644 is a wasteful number, since it uses less digits than its factorization.

854860644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The cubic root of 854860644 is about 949.0704273696.

The spelling of 854860644 in words is "eight hundred fifty-four million, eight hundred sixty thousand, six hundred forty-four".