66501410 has 16 divisors (see below), whose sum is σ = 121219200. Its totient is φ = 26263536.

The previous prime is 66501403. The next prime is 66501451. The reversal of 66501410 is 1410566.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41300 + ... + 42879.

It is an arithmetic number, because the mean of its divisors is an integer number (7576200).

Almost surely, 2^66501410 is an apocalyptic number.

66501410 is a deficient number, since it is larger than the sum of its proper divisors (54717790).

66501410 is a wasteful number, since it uses less digits than its factorization.

66501410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84265.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 66501410 is about 8154.8396673387. The cubic root of 66501410 is about 405.1448143412.

Adding to 66501410 its reverse (1410566), we get a palindrome (67911976).

The spelling of 66501410 in words is "sixty-six million, five hundred one thousand, four hundred ten".