3120604661 has 2 divisors, whose sum is σ = 3120604662. Its totient is φ = 3120604660.

The previous prime is 3120604637. The next prime is 3120604667. The reversal of 3120604661 is 1664060213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2962624900 + 157979761 = 54430^2 + 12569^2 .

It is an emirp because it is prime and its reverse (1664060213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3120604661 - 2¹⁴ = 3120588277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3120604667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560302330 + 1560302331.

It is an arithmetic number, because the mean of its divisors is an integer number (1560302331).

Almost surely, 2^3120604661 is an apocalyptic number.

It is an amenable number.

3120604661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120604661 is an equidigital number, since it uses as much as digits as its factorization.

3120604661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3120604661 is about 55862.3724970574. The cubic root of 3120604661 is about 1461.3231048707.

Adding to 3120604661 its reverse (1664060213), we get a palindrome (4784664874).

The spelling of 3120604661 in words is "three billion, one hundred twenty million, six hundred four thousand, six hundred sixty-one".