6922878646 has 16 divisors (see below), whose sum is σ = 11283471360. Its totient is φ = 3173475240.

The previous prime is 6922878631. The next prime is 6922878661. The reversal of 6922878646 is 6468782296.

It is an interprime number because it is at equal distance from previous prime (6922878631) and next prime (6922878661).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937226 + ... + 2939581.

It is an arithmetic number, because the mean of its divisors is an integer number (705216960).

Almost surely, 2^6922878646 is an apocalyptic number.

6922878646 is a deficient number, since it is larger than the sum of its proper divisors (4360592714).

6922878646 is a wasteful number, since it uses less digits than its factorization.

6922878646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876859.

The product of its digits is 13934592, while the sum is 58.

The square root of 6922878646 is about 83203.8379283071. The cubic root of 6922878646 is about 1905.8800888878.

The spelling of 6922878646 in words is "six billion, nine hundred twenty-two million, eight hundred seventy-eight thousand, six hundred forty-six".