855927644 has 48 divisors (see below), whose sum is σ = 1802709216. Its totient is φ = 350361600.

The previous prime is 855927643. The next prime is 855927671. The reversal of 855927644 is 446729558.

It is a super-2 number, since 2×855927644² = 1465224263526781472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 855927592 and 855927601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855927643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5204 + ... + 41700.

It is an arithmetic number, because the mean of its divisors is an integer number (37556442).

Almost surely, 2^855927644 is an apocalyptic number.

It is an amenable number.

855927644 is an abundant number, since it is smaller than the sum of its proper divisors (946781572).

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

855927644 is a wasteful number, since it uses less digits than its factorization.

855927644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36566 (or 36564 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The square root of 855927644 is about 29256.2411119405. The cubic root of 855927644 is about 949.4651260558.

The spelling of 855927644 in words is "eight hundred fifty-five million, nine hundred twenty-seven thousand, six hundred forty-four".