102635666 has 16 divisors (see below), whose sum is σ = 179267904. Its totient is φ = 43156464.

The previous prime is 102635597. The next prime is 102635677. The reversal of 102635666 is 666536201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68420 + ... + 69903.

It is an arithmetic number, because the mean of its divisors is an integer number (11204244).

Almost surely, 2^102635666 is an apocalyptic number.

102635666 is a deficient number, since it is larger than the sum of its proper divisors (76632238).

102635666 is a wasteful number, since it uses less digits than its factorization.

102635666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138385.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 102635666 is about 10130.9262162943. The cubic root of 102635666 is about 468.2014649933.

It can be divided in two parts, 102635 and 666, that added together give a palindrome (103301).

The spelling of 102635666 in words is "one hundred two million, six hundred thirty-five thousand, six hundred sixty-six".