6729540 has 48 divisors (see below), whose sum is σ = 19172160. Its totient is φ = 1763200.

The previous prime is 6729533. The next prime is 6729571. The reversal of 6729540 is 459276.

It is a super-2 number, since 2×6729540² = 90573417223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2590 + ... + 4490.

It is an arithmetic number, because the mean of its divisors is an integer number (399420).

Almost surely, 2^6729540 is an apocalyptic number.

6729540 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 6729540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9586080).

6729540 is an abundant number, since it is smaller than the sum of its proper divisors (12442620).

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

6729540 is a wasteful number, since it uses less digits than its factorization.

6729540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 6729540 is about 2594.1356942149. The cubic root of 6729540 is about 188.7970161958.

The spelling of 6729540 in words is "six million, seven hundred twenty-nine thousand, five hundred forty".