65561067 has 48 divisors (see below), whose sum is σ = 112441056. Its totient is φ = 36590400.

The previous prime is 65561051. The next prime is 65561071. The reversal of 65561067 is 76016556.

It is a happy number.

It is not a de Polignac number, because 65561067 - 2⁴ = 65561051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65561047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155517 + ... + 155937.

It is an arithmetic number, because the mean of its divisors is an integer number (2342522).

Almost surely, 2^65561067 is an apocalyptic number.

65561067 is a deficient number, since it is larger than the sum of its proper divisors (46879989).

65561067 is a wasteful number, since it uses less digits than its factorization.

65561067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 65561067 is about 8096.9788810395. The cubic root of 65561067 is about 403.2261331264.

The spelling of 65561067 in words is "sixty-five million, five hundred sixty-one thousand, sixty-seven".