1061720 has 64 divisors (see below), whose sum is σ = 2764800. Its totient is φ = 362880.

The previous prime is 1061717. The next prime is 1061729. The reversal of 1061720 is 271601.

It is a happy number.

It is a super-2 number, since 2×1061720² = 2254498716800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8297 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (43200).

2^1061720 is an apocalyptic number.

1061720 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 1061720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382400).

1061720 is an abundant number, since it is smaller than the sum of its proper divisors (1703080).

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

1061720 is a wasteful number, since it uses less digits than its factorization.

1061720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1061720 is about 1030.3979813645. The cubic root of 1061720 is about 102.0164013098.

The spelling of 1061720 in words is "one million, sixty-one thousand, seven hundred twenty".