66880102 has 16 divisors (see below), whose sum is σ = 103248432. Its totient is φ = 32471680.

The previous prime is 66880081. The next prime is 66880103. The reversal of 66880102 is 20108866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66880103) 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, 16818 + ... + 20410.

It is an arithmetic number, because the mean of its divisors is an integer number (6453027).

Almost surely, 2^66880102 is an apocalyptic number.

66880102 is a deficient number, since it is larger than the sum of its proper divisors (36368330).

66880102 is a wasteful number, since it uses less digits than its factorization.

66880102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 66880102 is about 8178.0255563308. The cubic root of 66880102 is about 405.9123910070.

Adding to 66880102 its reverse (20108866), we get a palindrome (86988968).

The spelling of 66880102 in words is "sixty-six million, eight hundred eighty thousand, one hundred two".