6015640 has 32 divisors (see below), whose sum is σ = 13770000. Its totient is φ = 2364544.

The previous prime is 6015629. The next prime is 6015641. The reversal of 6015640 is 465106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6015641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086 + ... + 3634.

Almost surely, 2^6015640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6015640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6885000).

6015640 is an abundant number, since it is smaller than the sum of its proper divisors (7754360).

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

6015640 is a wasteful number, since it uses less digits than its factorization.

6015640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619 (or 2615 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 6015640 is about 2452.6801666748. The cubic root of 6015640 is about 181.8698098841.

It can be divided in two parts, 601 and 5640, that added together give a square (6241 = 79²).

The spelling of 6015640 in words is "six million, fifteen thousand, six hundred forty".