6926794778 has 4 divisors (see below), whose sum is σ = 10390192170. Its totient is φ = 3463397388.

The previous prime is 6926794769. The next prime is 6926794781. The reversal of 6926794778 is 8774976296.

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., 6262031689 + 664763089 = 79133^2 + 25783^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1731698693 + ... + 1731698696.

Almost surely, 2^6926794778 is an apocalyptic number.

6926794778 is a deficient number, since it is larger than the sum of its proper divisors (3463397392).

6926794778 is a wasteful number, since it uses less digits than its factorization.

6926794778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463397391.

The product of its digits is 64012032, while the sum is 65.

The square root of 6926794778 is about 83227.3679627080. The cubic root of 6926794778 is about 1906.2393937126.

The spelling of 6926794778 in words is "six billion, nine hundred twenty-six million, seven hundred ninety-four thousand, seven hundred seventy-eight".