65796240 has 160 divisors (see below), whose sum is σ = 219985920. Its totient is φ = 16215552.

The previous prime is 65796233. The next prime is 65796251. The reversal of 65796240 is 4269756.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214167 + ... + 214473.

It is an arithmetic number, because the mean of its divisors is an integer number (1374912).

Almost surely, 2^65796240 is an apocalyptic number.

65796240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65796240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109992960).

65796240 is an abundant number, since it is smaller than the sum of its proper divisors (154189680).

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

65796240 is a wasteful number, since it uses less digits than its factorization.

65796240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 65796240 is about 8111.4881495321. The cubic root of 65796240 is about 403.7076930113.

The spelling of 65796240 in words is "sixty-five million, seven hundred ninety-six thousand, two hundred forty".