65940732 has 72 divisors (see below), whose sum is σ = 195839280. Its totient is φ = 18443520.

The previous prime is 65940713. The next prime is 65940737. The reversal of 65940732 is 23704956.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65940737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1257 + ... + 11552.

It is an arithmetic number, because the mean of its divisors is an integer number (2719990).

Almost surely, 2^65940732 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 65940732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97919640).

65940732 is an abundant number, since it is smaller than the sum of its proper divisors (129898548).

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

65940732 is a wasteful number, since it uses less digits than its factorization.

65940732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12843 (or 12838 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 65940732 is about 8120.3898921172. The cubic root of 65940732 is about 404.0029980498.

The spelling of 65940732 in words is "sixty-five million, nine hundred forty thousand, seven hundred thirty-two".