65712996 has 54 divisors (see below), whose sum is σ = 170969526. Its totient is φ = 21268800.

The previous prime is 65712991. The next prime is 65713019. The reversal of 65712996 is 69921756.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40068900 + 25644096 = 6330^2 + 5064^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65712991) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 311331 + ... + 311541.

Almost surely, 2^65712996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65712996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85484763).

65712996 is an abundant number, since it is smaller than the sum of its proper divisors (105256530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65712996 is a wasteful number, since it uses less digits than its factorization.

65712996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 257 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 65712996 is about 8106.3552845900. The cubic root of 65712996 is about 403.5373670383.

The spelling of 65712996 in words is "sixty-five million, seven hundred twelve thousand, nine hundred ninety-six".