1066778352 has 30 divisors (see below), whose sum is σ = 2985498152. Its totient is φ = 355592736.

The previous prime is 1066778347. The next prime is 1066778353. The reversal of 1066778352 is 2538776601.

It is a super-2 number, since 2×1066778352² = 2276032104591671808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1066778298 and 1066778307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066778353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3703948 + ... + 3704235.

Almost surely, 2^1066778352 is an apocalyptic number.

1066778352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1066778352 is an abundant number, since it is smaller than the sum of its proper divisors (1918719800).

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

1066778352 is a wasteful number, since it uses less digits than its factorization.

1066778352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7408197 (or 7408188 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 1066778352 is about 32661.5730178447. The cubic root of 1066778352 is about 1021.7815692487.

The spelling of 1066778352 in words is "one billion, sixty-six million, seven hundred seventy-eight thousand, three hundred fifty-two".