5661007 has 4 divisors (see below), whose sum is σ = 6175656. Its totient is φ = 5146360.

The previous prime is 5661001. The next prime is 5661041. The reversal of 5661007 is 7001665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5661007 - 2³ = 5660999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257308 + ... + 257329.

It is an arithmetic number, because the mean of its divisors is an integer number (1543914).

Almost surely, 2^5661007 is an apocalyptic number.

5661007 is a deficient number, since it is larger than the sum of its proper divisors (514649).

5661007 is a wasteful number, since it uses less digits than its factorization.

5661007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514648.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 5661007 is about 2379.2870780971. The cubic root of 5661007 is about 178.2233341112.

The spelling of 5661007 in words is "five million, six hundred sixty-one thousand, seven".