5661747 has 48 divisors (see below), whose sum is σ = 10436608. Its totient is φ = 2877120.

The previous prime is 5661743. The next prime is 5661779. The reversal of 5661747 is 7471665.

It is not a de Polignac number, because 5661747 - 2² = 5661743 is a prime.

Its product of digits (35280) is a multiple of the sum of its prime factors (280).

It is not an unprimeable number, because it can be changed into a prime (5661743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25278 + ... + 25500.

Almost surely, 2^5661747 is an apocalyptic number.

5661747 is a deficient number, since it is larger than the sum of its proper divisors (4774861).

5661747 is a wasteful number, since it uses less digits than its factorization.

5661747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 277 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 5661747 is about 2379.4425817825. The cubic root of 5661747 is about 178.2310994859.

The spelling of 5661747 in words is "five million, six hundred sixty-one thousand, seven hundred forty-seven".