5615640 has 96 divisors (see below), whose sum is σ = 19234800. Its totient is φ = 1416960.

The previous prime is 5615639. The next prime is 5615641. The reversal of 5615640 is 465165.

It is a happy number.

5615640 is a `hidden beast` number, since 5 + 6 + 15 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (5615639) and next prime (5615641).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5615641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6430 + ... + 7250.

Almost surely, 2^5615640 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 5615640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9617400).

5615640 is an abundant number, since it is smaller than the sum of its proper divisors (13619160).

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

5615640 is a wasteful number, since it uses less digits than its factorization.

5615640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 5615640 is about 2369.7341623060. The cubic root of 5615640 is about 177.7459659514.

The spelling of 5615640 in words is "five million, six hundred fifteen thousand, six hundred forty".