2601720 has 160 divisors (see below), whose sum is σ = 9670320. Its totient is φ = 622080.

The previous prime is 2601713. The next prime is 2601757. The reversal of 2601720 is 271062.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 2601693 and 2601702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35604 + ... + 35676.

2^2601720 is an apocalyptic number.

2601720 is a gapful number since it is divisible by the number (20) 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 2601720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4835160).

2601720 is an abundant number, since it is smaller than the sum of its proper divisors (7068600).

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

2601720 is a wasteful number, since it uses less digits than its factorization.

2601720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 2601720 is about 1612.9848108398. The cubic root of 2601720 is about 137.5372020549.

Adding to 2601720 its reverse (271062), we get a palindrome (2872782).

It can be divided in two parts, 2601 and 720, that added together give a triangular number (3321 = T₈₁).

The spelling of 2601720 in words is "two million, six hundred one thousand, seven hundred twenty".