855649360 has 40 divisors (see below), whose sum is σ = 1993388040. Its totient is φ = 341571072.

The previous prime is 855649357. The next prime is 855649373. The reversal of 855649360 is 63946558.

It can be written as a sum of positive squares in 4 ways, for example, as 9072144 + 846577216 = 3012^2 + 29096^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 855649360.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30214 + ... + 51226.

It is an arithmetic number, because the mean of its divisors is an integer number (49834701).

Almost surely, 2^855649360 is an apocalyptic number.

855649360 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

855649360 is an abundant number, since it is smaller than the sum of its proper divisors (1137738680).

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

855649360 is a wasteful number, since it uses less digits than its factorization.

855649360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21535 (or 21529 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 855649360 is about 29251.4847486414. The cubic root of 855649360 is about 949.3622164251.

The spelling of 855649360 in words is "eight hundred fifty-five million, six hundred forty-nine thousand, three hundred sixty".