6820616354 has 8 divisors (see below), whose sum is σ = 10231577580. Its totient is φ = 3410090496.

The previous prime is 6820616347. The next prime is 6820616357. The reversal of 6820616354 is 4536160286.

It can be written as a sum of positive squares in 2 ways, for example, as 6451784329 + 368832025 = 80323^2 + 19205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6820616357) 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, 66359 + ... + 134330.

Almost surely, 2^6820616354 is an apocalyptic number.

6820616354 is a deficient number, since it is larger than the sum of its proper divisors (3410961226).

6820616354 is a wasteful number, since it uses less digits than its factorization.

6820616354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217684.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 6820616354 is about 82587.0229152256. The cubic root of 6820616354 is about 1896.4491718375.

The spelling of 6820616354 in words is "six billion, eight hundred twenty million, six hundred sixteen thousand, three hundred fifty-four".