6979355641 has 4 divisors (see below), whose sum is σ = 6994628212. Its totient is φ = 6964083072.

The previous prime is 6979355623. The next prime is 6979355651. The reversal of 6979355641 is 1465539796.

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 4478955625 + 2500400016 = 66925^2 + 50004^2 .

It is a cyclic number.

It is not a de Polignac number, because 6979355641 - 2¹¹ = 6979353593 is a prime.

It is a super-2 number, since 2×6979355641² = 97422810327117041762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6979355651) 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, 7635600 + ... + 7636513.

It is an arithmetic number, because the mean of its divisors is an integer number (1748657053).

Almost surely, 2^6979355641 is an apocalyptic number.

It is an amenable number.

6979355641 is a deficient number, since it is larger than the sum of its proper divisors (15272571).

6979355641 is a wasteful number, since it uses less digits than its factorization.

6979355641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15272570.

The product of its digits is 6123600, while the sum is 55.

The square root of 6979355641 is about 83542.5379133289. The cubic root of 6979355641 is about 1911.0487959031.

The spelling of 6979355641 in words is "six billion, nine hundred seventy-nine million, three hundred fifty-five thousand, six hundred forty-one".