65707236 has 81 divisors (see below), whose sum is σ = 194216841. Its totient is φ = 18676224.

The previous prime is 65707231. The next prime is 65707273. The reversal of 65707236 is 63270756.

It is a happy number.

The square root of 65707236 is 8106.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15920100 + 49787136 = 3990^2 + 7056^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 65707236.

It is not an unprimeable number, because it can be changed into a prime (65707231) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 340356 + ... + 340548.

Almost surely, 2^65707236 is an apocalyptic number.

65707236 is the 8106-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65707236

65707236 is an abundant number, since it is smaller than the sum of its proper divisors (128509605).

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

65707236 is a wasteful number, since it uses less digits than its factorization.

65707236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The cubic root of 65707236 is about 403.5255761532.

Multiplying 65707236 by its sum of digits (36), we get a square (2365460496 = 48636²).

65707236 divided by its sum of digits (36) gives a square (1825201 = 1351²).

The spelling of 65707236 in words is "sixty-five million, seven hundred seven thousand, two hundred thirty-six".