5661207 has 6 divisors (see below), whose sum is σ = 8177312. Its totient is φ = 3774132.

The previous prime is 5661203. The next prime is 5661209. The reversal of 5661207 is 7021665.

It is not a de Polignac number, because 5661207 - 2² = 5661203 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 (5661203) 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 5 ways as a sum of consecutive naturals, for example, 314503 + ... + 314520.

Almost surely, 2^5661207 is an apocalyptic number.

5661207 is a deficient number, since it is larger than the sum of its proper divisors (2516105).

5661207 is a wasteful number, since it uses less digits than its factorization.

5661207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629029 (or 629026 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 5661207 is about 2379.3291071224. The cubic root of 5661207 is about 178.2254329279.

The spelling of 5661207 in words is "five million, six hundred sixty-one thousand, two hundred seven".