65562660 has 72 divisors (see below), whose sum is σ = 200019456. Its totient is φ = 17382720.

The previous prime is 65562641. The next prime is 65562661. The reversal of 65562660 is 6626556.

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

It is not an unprimeable number, because it can be changed into a prime (65562661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33427 + ... + 35333.

It is an arithmetic number, because the mean of its divisors is an integer number (2778048).

Almost surely, 2^65562660 is an apocalyptic number.

65562660 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 65562660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100009728).

65562660 is an abundant number, since it is smaller than the sum of its proper divisors (134456796).

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

65562660 is a wasteful number, since it uses less digits than its factorization.

65562660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113 (or 2108 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 65562660 is about 8097.0772504651. The cubic root of 65562660 is about 403.2293989571.

It can be divided in two parts, 6556 and 2660, that added together give a square (9216 = 96²).

The spelling of 65562660 in words is "sixty-five million, five hundred sixty-two thousand, six hundred sixty".