9660642061 has 8 divisors (see below), whose sum is σ = 11050698240. Its totient is φ = 8273077008.

The previous prime is 9660642059. The next prime is 9660642077. The reversal of 9660642061 is 1602460669.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9660642061 - 2¹ = 9660642059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9660642011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614461 + ... + 629986.

It is an arithmetic number, because the mean of its divisors is an integer number (1381337280).

Almost surely, 2^9660642061 is an apocalyptic number.

It is an amenable number.

9660642061 is a deficient number, since it is larger than the sum of its proper divisors (1390056179).

9660642061 is a wasteful number, since it uses less digits than its factorization.

9660642061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245563.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 9660642061 is about 98288.5652606650. The cubic root of 9660642061 is about 2129.7828737509.

The spelling of 9660642061 in words is "nine billion, six hundred sixty million, six hundred forty-two thousand, sixty-one".