905650820 has 48 divisors (see below), whose sum is σ = 1921200960. Its totient is φ = 358598016.

The previous prime is 905650793. The next prime is 905650841. The reversal of 905650820 is 28056509.

905650820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235174 + ... + 1235906.

It is an arithmetic number, because the mean of its divisors is an integer number (40025020).

Almost surely, 2^905650820 is an apocalyptic number.

It is an amenable number.

905650820 is an abundant number, since it is smaller than the sum of its proper divisors (1015550140).

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

905650820 is a wasteful number, since it uses less digits than its factorization.

905650820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1282 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 905650820 is about 30094.0329633634. The cubic root of 905650820 is about 967.5058394019.

The spelling of 905650820 in words is "nine hundred five million, six hundred fifty thousand, eight hundred twenty".