1069780 has 24 divisors (see below), whose sum is σ = 2275560. Its totient is φ = 422400.

The previous prime is 1069777. The next prime is 1069807. The reversal of 1069780 is 879601.

It can be written as a sum of positive squares in 4 ways, for example, as 121104 + 948676 = 348^2 + 974^2 .

It is a super-2 number, since 2×1069780² = 2288858496800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (94815).

2^1069780 is an apocalyptic number.

1069780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1069780 is an abundant number, since it is smaller than the sum of its proper divisors (1205780).

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

1069780 is a wasteful number, since it uses less digits than its factorization.

1069780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1069780 is about 1034.3016967984. The cubic root of 1069780 is about 102.2739017897.

It can be divided in two parts, 1069 and 780, that added together give a square (1849 = 43²).

The spelling of 1069780 in words is "one million, sixty-nine thousand, seven hundred eighty".