1066484778 has 16 divisors (see below), whose sum is σ = 2138041056. Its totient is φ = 354649680.

The previous prime is 1066484719. The next prime is 1066484779. The reversal of 1066484778 is 8774846601.

It is a happy number.

It is a super-2 number, since 2×1066484778² = 2274779563411418568, 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 1066484778.

It is not an unprimeable number, because it can be changed into a prime (1066484779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208576 + ... + 213627.

It is an arithmetic number, because the mean of its divisors is an integer number (133627566).

Almost surely, 2^1066484778 is an apocalyptic number.

1066484778 is an abundant number, since it is smaller than the sum of its proper divisors (1071556278).

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

1066484778 is a wasteful number, since it uses less digits than its factorization.

1066484778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422629.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 1066484778 is about 32657.0785282456. The cubic root of 1066484778 is about 1021.6878303063.

The spelling of 1066484778 in words is "one billion, sixty-six million, four hundred eighty-four thousand, seven hundred seventy-eight".