1069880640 has 112 divisors (see below), whose sum is σ = 3407980992. Its totient is φ = 284368896.

The previous prime is 1069880593. The next prime is 1069880663. The reversal of 1069880640 is 460889601.

It is a super-2 number, since 2×1069880640² = 2289289167693619200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1069880592 and 1069880601.

It is a congruent number.

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, 321867 + ... + 325173.

Almost surely, 2^1069880640 is an apocalyptic number.

1069880640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1069880640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703990496).

1069880640 is an abundant number, since it is smaller than the sum of its proper divisors (2338100352).

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

1069880640 is a wasteful number, since it uses less digits than its factorization.

1069880640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664 (or 3654 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1069880640 is about 32709.0299458727. The cubic root of 1069880640 is about 1022.7710884250.

The spelling of 1069880640 in words is "one billion, sixty-nine million, eight hundred eighty thousand, six hundred forty".