660060825961 has 4 divisors (see below), whose sum is σ = 660068438400. Its totient is φ = 660053213524.

The previous prime is 660060825943. The next prime is 660060826001. The reversal of 660060825961 is 169528060066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169528060066 = 2 ⋅84764030033.

It is a cyclic number.

It is not a de Polignac number, because 660060825961 - 2¹³ = 660060817769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660060825761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3674641 + ... + 3850078.

It is an arithmetic number, because the mean of its divisors is an integer number (165017109600).

Almost surely, 2^660060825961 is an apocalyptic number.

It is an amenable number.

660060825961 is a deficient number, since it is larger than the sum of its proper divisors (7612439).

660060825961 is an equidigital number, since it uses as much as digits as its factorization.

660060825961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612438.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 660060825961 in words is "six hundred sixty billion, sixty million, eight hundred twenty-five thousand, nine hundred sixty-one".