7561944 has 64 divisors (see below), whose sum is σ = 22629600. Its totient is φ = 2325888.

The previous prime is 7561921. The next prime is 7561969. The reversal of 7561944 is 4491657.

7561944 is a `hidden beast` number, since 7 + 561 + 94 + 4 = 666.

7561944 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7561899 and 7561908.

It is a congruent number.

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, 1462 + ... + 4154.

Almost surely, 2^7561944 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 7561944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11314800).

7561944 is an abundant number, since it is smaller than the sum of its proper divisors (15067656).

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

7561944 is a wasteful number, since it uses less digits than its factorization.

7561944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2711 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 7561944 is about 2749.8989072328. The cubic root of 7561944 is about 196.2807997963.

The spelling of 7561944 in words is "seven million, five hundred sixty-one thousand, nine hundred forty-four".