6206640 has 80 divisors (see below), whose sum is σ = 20998656. Its totient is φ = 1504000.

The previous prime is 6206579. The next prime is 6206653. The reversal of 6206640 is 466026.

6206640 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 6206640.

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, 1465 + ... + 3815.

Almost surely, 2^6206640 is an apocalyptic number.

6206640 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 6206640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10499328).

6206640 is an abundant number, since it is smaller than the sum of its proper divisors (14792016).

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

6206640 is a wasteful number, since it uses less digits than its factorization.

6206640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6206640 is about 2491.3129068826. The cubic root of 6206640 is about 183.7746137605.

It can be divided in two parts, 620 and 6640, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 6206640 in words is "six million, two hundred six thousand, six hundred forty".