6678699355 has 4 divisors (see below), whose sum is σ = 8014439232. Its totient is φ = 5342959480.

The previous prime is 6678699353. The next prime is 6678699361. The reversal of 6678699355 is 5539968766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5539968766 = 2 ⋅2769984383.

It is not a de Polignac number, because 6678699355 - 2¹ = 6678699353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6678699353) 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, 667869931 + ... + 667869940.

It is an arithmetic number, because the mean of its divisors is an integer number (2003609808).

Almost surely, 2^6678699355 is an apocalyptic number.

6678699355 is a deficient number, since it is larger than the sum of its proper divisors (1335739877).

6678699355 is a wasteful number, since it uses less digits than its factorization.

6678699355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335739876.

The product of its digits is 73483200, while the sum is 64.

The square root of 6678699355 is about 81723.3097408567. The cubic root of 6678699355 is about 1883.2036965267.

The spelling of 6678699355 in words is "six billion, six hundred seventy-eight million, six hundred ninety-nine thousand, three hundred fifty-five".