5661745 has 8 divisors (see below), whose sum is σ = 6840000. Its totient is φ = 4498800.

The previous prime is 5661743. The next prime is 5661779. The reversal of 5661745 is 5471665.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5661745 - 2¹ = 5661743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5661745.

It is not an unprimeable number, because it can be changed into a prime (5661743) 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, 2995 + ... + 4504.

It is an arithmetic number, because the mean of its divisors is an integer number (855000).

Almost surely, 2^5661745 is an apocalyptic number.

It is an amenable number.

5661745 is a deficient number, since it is larger than the sum of its proper divisors (1178255).

5661745 is a wasteful number, since it uses less digits than its factorization.

5661745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655.

The product of its digits is 25200, while the sum is 34.

The square root of 5661745 is about 2379.4421615160. The cubic root of 5661745 is about 178.2310784993.

The spelling of 5661745 in words is "five million, six hundred sixty-one thousand, seven hundred forty-five".