9966807701 has 8 divisors (see below), whose sum is σ = 9987731544. Its totient is φ = 9945907200.

The previous prime is 9966807691. The next prime is 9966807709. The reversal of 9966807701 is 1077086699.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 329458801 + 9637348900 = 18151^2 + 98170^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9966807701 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 (9966807709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033301 + ... + 1042901.

It is an arithmetic number, because the mean of its divisors is an integer number (1248466443).

Almost surely, 2^9966807701 is an apocalyptic number.

It is an amenable number.

9966807701 is a deficient number, since it is larger than the sum of its proper divisors (20923843).

9966807701 is a wasteful number, since it uses less digits than its factorization.

9966807701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 9966807701 is about 99833.9005598800. The cubic root of 9966807701 is about 2152.0483598080.

The spelling of 9966807701 in words is "nine billion, nine hundred sixty-six million, eight hundred seven thousand, seven hundred one".