65355776 has 30 divisors (see below), whose sum is σ = 130740330. Its totient is φ = 32669696.

The previous prime is 65355757. The next prime is 65355793. The reversal of 65355776 is 67755356.

It can be written as a sum of positive squares in only one way, i.e., 55115776 + 10240000 = 7424^2 + 3200^2 .

It is a nialpdrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14390 + ... + 18378.

It is an arithmetic number, because the mean of its divisors is an integer number (4358011).

Almost surely, 2^65355776 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 65355776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65370165).

65355776 is an abundant number, since it is smaller than the sum of its proper divisors (65384554).

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

65355776 is an frugal number, since it uses more digits than its factorization.

65355776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017 (or 3991 counting only the distinct ones).

The product of its digits is 661500, while the sum is 44.

The square root of 65355776 is about 8084.2919294147. The cubic root of 65355776 is about 402.8048198278.

The spelling of 65355776 in words is "sixty-five million, three hundred fifty-five thousand, seven hundred seventy-six".