66043610 has 16 divisors (see below), whose sum is σ = 119991456. Its totient is φ = 26170128.

The previous prime is 66043591. The next prime is 66043613. The reversal of 66043610 is 1634066.

It is a self number, because there is not a number n which added to its sum of digits gives 66043610.

It is not an unprimeable number, because it can be changed into a prime (66043613) 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, 29792 + ... + 31931.

It is an arithmetic number, because the mean of its divisors is an integer number (7499466).

Almost surely, 2^66043610 is an apocalyptic number.

66043610 is a deficient number, since it is larger than the sum of its proper divisors (53947846).

66043610 is a wasteful number, since it uses less digits than its factorization.

66043610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61837.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 66043610 is about 8126.7219713732. The cubic root of 66043610 is about 404.2129917969.

Adding to 66043610 its reverse (1634066), we get a palindrome (67677676).

The spelling of 66043610 in words is "sixty-six million, forty-three thousand, six hundred ten".