1077720 has 64 divisors (see below), whose sum is σ = 3697920. Its totient is φ = 246144.

The previous prime is 1077719. The next prime is 1077721. The reversal of 1077720 is 277701.

It is an interprime number because it is at equal distance from previous prime (1077719) and next prime (1077721).

It is a super-2 number, since 2×1077720² = 2322960796800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1077721) 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, 199 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (57780).

2^1077720 is an apocalyptic number.

1077720 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 1077720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848960).

1077720 is an abundant number, since it is smaller than the sum of its proper divisors (2620200).

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

1077720 is a wasteful number, since it uses less digits than its factorization.

1077720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 686, while the sum is 24.

The square root of 1077720 is about 1038.1329394639. The cubic root of 1077720 is about 102.5263069498.

The spelling of 1077720 in words is "one million, seventy-seven thousand, seven hundred twenty".