6779748994 has 4 divisors (see below), whose sum is σ = 10169623494. Its totient is φ = 3389874496.

The previous prime is 6779748991. The next prime is 6779749007. The reversal of 6779748994 is 4998479776.

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

It can be written as a sum of positive squares in only one way, i.e., 4110476769 + 2669272225 = 64113^2 + 51665^2 .

It is not an unprimeable number, because it can be changed into a prime (6779748991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1694937247 + ... + 1694937250.

Almost surely, 2^6779748994 is an apocalyptic number.

6779748994 is a deficient number, since it is larger than the sum of its proper divisors (3389874500).

6779748994 is a wasteful number, since it uses less digits than its factorization.

6779748994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389874499.

The product of its digits is 192036096, while the sum is 70.

The square root of 6779748994 is about 82339.2311963137. The cubic root of 6779748994 is about 1892.6539048275.

The spelling of 6779748994 in words is "six billion, seven hundred seventy-nine million, seven hundred forty-eight thousand, nine hundred ninety-four".