7699779967 has 4 divisors (see below), whose sum is σ = 8399759976. Its totient is φ = 6999799960.

The previous prime is 7699779959. The next prime is 7699779979.

7699779967 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 7699779967 - 2³ = 7699779959 is a prime.

It is a super-2 number, since 2×7699779967² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (76) 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 junction number, because it is equal to n+sod(n) for n = 7699779893 and 7699779902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7699776967) 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, 349989988 + ... + 349990009.

It is an arithmetic number, because the mean of its divisors is an integer number (2099939994).

Almost surely, 2^7699779967 is an apocalyptic number.

7699779967 is a deficient number, since it is larger than the sum of its proper divisors (699980009).

7699779967 is a wasteful number, since it uses less digits than its factorization.

7699779967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699980008.

The product of its digits is 567106596, while the sum is 76.

The square root of 7699779967 is about 87748.3901105884. The cubic root of 7699779967 is about 1974.6620127282.

The spelling of 7699779967 in words is "seven billion, six hundred ninety-nine million, seven hundred seventy-nine thousand, nine hundred sixty-seven".