102730066 has 4 divisors (see below), whose sum is σ = 154095102. Its totient is φ = 51365032.

The previous prime is 102730057. The next prime is 102730073. The reversal of 102730066 is 660037201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660037201 = 1223 ⋅539687.

It can be written as a sum of positive squares in only one way, i.e., 96334225 + 6395841 = 9815^2 + 2529^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102730066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25682515 + ... + 25682518.

Almost surely, 2^102730066 is an apocalyptic number.

102730066 is a deficient number, since it is larger than the sum of its proper divisors (51365036).

102730066 is an equidigital number, since it uses as much as digits as its factorization.

102730066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51365035.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 102730066 is about 10135.5841469547. The cubic root of 102730066 is about 468.3449650597.

Adding to 102730066 its reverse (660037201), we get a palindrome (762767267).

The spelling of 102730066 in words is "one hundred two million, seven hundred thirty thousand, sixty-six".