65561707 has 8 divisors (see below), whose sum is σ = 72436896. Its totient is φ = 59021952.

The previous prime is 65561693. The next prime is 65561729. The reversal of 65561707 is 70716556.

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

It is a cyclic number.

It is not a de Polignac number, because 65561707 - 2⁷ = 65561579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65561737) 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, 83448 + ... + 84229.

It is an arithmetic number, because the mean of its divisors is an integer number (9054612).

Almost surely, 2^65561707 is an apocalyptic number.

65561707 is a deficient number, since it is larger than the sum of its proper divisors (6875189).

65561707 is a wasteful number, since it uses less digits than its factorization.

65561707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167717.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 65561707 is about 8097.0184018563. The cubic root of 65561707 is about 403.2274452053.

The spelling of 65561707 in words is "sixty-five million, five hundred sixty-one thousand, seven hundred seven".