9661334677 has 4 divisors (see below), whose sum is σ = 9661946220. Its totient is φ = 9660723136.

The previous prime is 9661334671. The next prime is 9661334689. The reversal of 9661334677 is 7764331669.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8515782961 + 1145551716 = 92281^2 + 33846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9661334677 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 (9661334671) 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, 281428 + ... + 313885.

It is an arithmetic number, because the mean of its divisors is an integer number (2415486555).

Almost surely, 2^9661334677 is an apocalyptic number.

It is an amenable number.

9661334677 is a deficient number, since it is larger than the sum of its proper divisors (611543).

9661334677 is a wasteful number, since it uses less digits than its factorization.

9661334677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611542.

The product of its digits is 3429216, while the sum is 52.

The square root of 9661334677 is about 98292.0885778708. The cubic root of 9661334677 is about 2129.8337705213.

The spelling of 9661334677 in words is "nine billion, six hundred sixty-one million, three hundred thirty-four thousand, six hundred seventy-seven".