660611002 has 4 divisors (see below), whose sum is σ = 990916506. Its totient is φ = 330305500.

The previous prime is 660610969. The next prime is 660611011. The reversal of 660611002 is 200116066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 480004281 + 180606721 = 21909^2 + 13439^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165152749 + ... + 165152752.

Almost surely, 2^660611002 is an apocalyptic number.

660611002 is a deficient number, since it is larger than the sum of its proper divisors (330305504).

660611002 is a wasteful number, since it uses less digits than its factorization.

660611002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330305503.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 660611002 is about 25702.3540167044. The cubic root of 660611002 is about 870.9273601140.

Adding to 660611002 its reverse (200116066), we get a palindrome (860727068).

The spelling of 660611002 in words is "six hundred sixty million, six hundred eleven thousand, two".