65778108 has 48 divisors (see below), whose sum is σ = 168376320. Its totient is φ = 19820800.

The previous prime is 65778101. The next prime is 65778109. The reversal of 65778108 is 80187756.

It is a self number, because there is not a number n which added to its sum of digits gives 65778108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65778101) 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 15 ways as a sum of consecutive naturals, for example, 23908 + ... + 26516.

It is an arithmetic number, because the mean of its divisors is an integer number (3507840).

Almost surely, 2^65778108 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 65778108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84188160).

65778108 is an abundant number, since it is smaller than the sum of its proper divisors (102598212).

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

65778108 is a wasteful number, since it uses less digits than its factorization.

65778108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 65778108 is about 8110.3703984467. The cubic root of 65778108 is about 403.6706052770.

The spelling of 65778108 in words is "sixty-five million, seven hundred seventy-eight thousand, one hundred eight".