9662662669 has 4 divisors (see below), whose sum is σ = 10541086560. Its totient is φ = 8784238780.

The previous prime is 9662662661. The next prime is 9662662673.

It is a happy number.

9662662669 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9662662669 - 2³ = 9662662661 is a prime.

It is a super-2 number, since 2×9662662669² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9662662661) 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, 439211929 + ... + 439211950.

It is an arithmetic number, because the mean of its divisors is an integer number (2635271640).

Almost surely, 2^9662662669 is an apocalyptic number.

It is an amenable number.

9662662669 is a deficient number, since it is larger than the sum of its proper divisors (878423891).

9662662669 is a wasteful number, since it uses less digits than its factorization.

9662662669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878423890.

The product of its digits is 15116544, while the sum is 58.

The square root of 9662662669 is about 98298.8436808898. The cubic root of 9662662669 is about 2129.9313509876.

The spelling of 9662662669 in words is "nine billion, six hundred sixty-two million, six hundred sixty-two thousand, six hundred sixty-nine".