784122066 has 64 divisors (see below), whose sum is σ = 2144620800. Its totient is φ = 206800128.

The previous prime is 784122061. The next prime is 784122067. The reversal of 784122066 is 660221487.

784122066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×784122066² = 1229694828776216712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 784122066.

It is not an unprimeable number, because it can be changed into a prime (784122061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74871 + ... + 84698.

It is an arithmetic number, because the mean of its divisors is an integer number (33509700).

Almost surely, 2^784122066 is an apocalyptic number.

784122066 is an abundant number, since it is smaller than the sum of its proper divisors (1360498734).

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

784122066 is a wasteful number, since it uses less digits than its factorization.

784122066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159600 (or 159594 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 784122066 is about 28002.1796651618. The cubic root of 784122066 is about 922.1351111593.

The spelling of 784122066 in words is "seven hundred eighty-four million, one hundred twenty-two thousand, sixty-six".