66560410 has 64 divisors (see below), whose sum is σ = 145336320. Its totient is φ = 21461760.

The previous prime is 66560407. The next prime is 66560419. The reversal of 66560410 is 1406566.

It is not an unprimeable number, because it can be changed into a prime (66560419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79876 + ... + 80704.

It is an arithmetic number, because the mean of its divisors is an integer number (2270880).

Almost surely, 2^66560410 is an apocalyptic number.

66560410 is an abundant number, since it is smaller than the sum of its proper divisors (78775910).

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

66560410 is a wasteful number, since it uses less digits than its factorization.

66560410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66560410 is about 8158.4563490896. The cubic root of 66560410 is about 405.2645936485.

Adding to 66560410 its reverse (1406566), we get a palindrome (67966976).

It can be divided in two parts, 665 and 60410, that added together give a triangular number (61075 = T₃₄₉).

The spelling of 66560410 in words is "sixty-six million, five hundred sixty thousand, four hundred ten".