66414410 has 16 divisors (see below), whose sum is σ = 126578376. Its totient is φ = 25003008.

The previous prime is 66414407. The next prime is 66414419. The reversal of 66414410 is 1441466.

It can be written as a sum of positive squares in 4 ways, for example, as 65334889 + 1079521 = 8083^2 + 1039^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66414410.

It is not an unprimeable number, because it can be changed into a prime (66414419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195167 + ... + 195506.

Almost surely, 2^66414410 is an apocalyptic number.

66414410 is a deficient number, since it is larger than the sum of its proper divisors (60163966).

66414410 is a wasteful number, since it uses less digits than its factorization.

66414410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390697.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 66414410 is about 8149.5036658682. The cubic root of 66414410 is about 404.9680612928.

Adding to 66414410 its reverse (1441466), we get a palindrome (67855876).

The spelling of 66414410 in words is "sixty-six million, four hundred fourteen thousand, four hundred ten".