65609506 has 4 divisors (see below), whose sum is σ = 98414262. Its totient is φ = 32804752.

The previous prime is 65609503. The next prime is 65609507. The reversal of 65609506 is 60590656.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 50282281 + 15327225 = 7091^2 + 3915^2 .

It is not an unprimeable number, because it can be changed into a prime (65609503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16402375 + ... + 16402378.

Almost surely, 2^65609506 is an apocalyptic number.

65609506 is a deficient number, since it is larger than the sum of its proper divisors (32804756).

65609506 is a wasteful number, since it uses less digits than its factorization.

65609506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32804755.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 65609506 is about 8099.9695061154. The cubic root of 65609506 is about 403.3254149270.

The spelling of 65609506 in words is "sixty-five million, six hundred nine thousand, five hundred six".