9660460991 has 2 divisors, whose sum is σ = 9660460992. Its totient is φ = 9660460990.

The previous prime is 9660460973. The next prime is 9660461003. The reversal of 9660460991 is 1990640669.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9660460991 - 2²² = 9656266687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9660460961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830230495 + 4830230496.

It is an arithmetic number, because the mean of its divisors is an integer number (4830230496).

Almost surely, 2^9660460991 is an apocalyptic number.

9660460991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9660460991 is an equidigital number, since it uses as much as digits as its factorization.

9660460991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 9660460991 is about 98287.6441420792. The cubic root of 9660460991 is about 2129.7695674512.

The spelling of 9660460991 in words is "nine billion, six hundred sixty million, four hundred sixty thousand, nine hundred ninety-one".