6156720 has 120 divisors (see below), whose sum is σ = 21936096. Its totient is φ = 1542144.

The previous prime is 6156719. The next prime is 6156721. The reversal of 6156720 is 276516.

It is an interprime number because it is at equal distance from previous prime (6156719) and next prime (6156721).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-3 number, since 3×6156720³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6156721) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11989 + ... + 12491.

Almost surely, 2^6156720 is an apocalyptic number.

6156720 is a gapful number since it is divisible by the number (60) 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 6156720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10968048).

6156720 is an abundant number, since it is smaller than the sum of its proper divisors (15779376).

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

6156720 is a wasteful number, since it uses less digits than its factorization.

6156720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 6156720 is about 2481.2738663840. The cubic root of 6156720 is about 183.2805872136.

The spelling of 6156720 in words is "six million, one hundred fifty-six thousand, seven hundred twenty".