1067720 has 16 divisors (see below), whose sum is σ = 2402460. Its totient is φ = 427072.

The previous prime is 1067711. The next prime is 1067741. The reversal of 1067720 is 277601.

1067720 = 125² + 126² + ... + 172².

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 872356 + 195364 = 934^2 + 442^2 .

It is a super-2 number, since 2×1067720² = 2280051996800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13307 + ... + 13386.

2^1067720 is an apocalyptic number.

1067720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1067720 is an abundant number, since it is smaller than the sum of its proper divisors (1334740).

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

1067720 is a wasteful number, since it uses less digits than its factorization.

1067720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26704 (or 26700 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 1067720 is about 1033.3053759659. The cubic root of 1067720 is about 102.2082123907.

The spelling of 1067720 in words is "one million, sixty-seven thousand, seven hundred twenty".