9697777772 has 12 divisors (see below), whose sum is σ = 17969411880. Its totient is φ = 4563660096.

The previous prime is 9697777757. The next prime is 9697777781. The reversal of 9697777772 is 2777777969.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (68), and also a Moran number because the ratio is a prime number: 142614379 = 9697777772 / (9 + 6 + 9 + 7 + 7 + 7 + 7 + 7 + 7 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71307122 + ... + 71307257.

It is an arithmetic number, because the mean of its divisors is an integer number (1497450990).

Almost surely, 2^9697777772 is an apocalyptic number.

It is an amenable number.

9697777772 is a deficient number, since it is larger than the sum of its proper divisors (8271634108).

9697777772 is a wasteful number, since it uses less digits than its factorization.

9697777772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142614400 (or 142614398 counting only the distinct ones).

The product of its digits is 114354828, while the sum is 68.

The square root of 9697777772 is about 98477.2957183533. The cubic root of 9697777772 is about 2132.5083611520.

The spelling of 9697777772 in words is "nine billion, six hundred ninety-seven million, seven hundred seventy-seven thousand, seven hundred seventy-two".