65631366 has 12 divisors (see below), whose sum is σ = 142201332. Its totient is φ = 21877116.

The previous prime is 65631341. The next prime is 65631367. The reversal of 65631366 is 66313656.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65631366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65631367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1823076 + ... + 1823111.

It is an arithmetic number, because the mean of its divisors is an integer number (11850111).

Almost surely, 2^65631366 is an apocalyptic number.

65631366 is an abundant number, since it is smaller than the sum of its proper divisors (76569966).

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

65631366 is a wasteful number, since it uses less digits than its factorization.

65631366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646195 (or 3646192 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 65631366 is about 8101.3187815318. The cubic root of 65631366 is about 403.3702037343.

The spelling of 65631366 in words is "sixty-five million, six hundred thirty-one thousand, three hundred sixty-six".