65609607 has 16 divisors (see below), whose sum is σ = 100897280. Its totient is φ = 37145952.

The previous prime is 65609573. The next prime is 65609611. The reversal of 65609607 is 70690656.

It is a happy number.

It is not a de Polignac number, because 65609607 - 2⁶ = 65609543 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 (65609627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12043 + ... + 16620.

It is an arithmetic number, because the mean of its divisors is an integer number (6306080).

Almost surely, 2^65609607 is an apocalyptic number.

65609607 is a deficient number, since it is larger than the sum of its proper divisors (35287673).

65609607 is a wasteful number, since it uses less digits than its factorization.

65609607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28782.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 65609607 is about 8099.9757407044. The cubic root of 65609607 is about 403.3256218881.

The spelling of 65609607 in words is "sixty-five million, six hundred nine thousand, six hundred seven".