6922778 has 4 divisors (see below), whose sum is σ = 10384170. Its totient is φ = 3461388.

The previous prime is 6922763. The next prime is 6922787. The reversal of 6922778 is 8772296.

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., 5968249 + 954529 = 2443^2 + 977^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1730693 + ... + 1730696.

Almost surely, 2^6922778 is an apocalyptic number.

6922778 is a deficient number, since it is larger than the sum of its proper divisors (3461392).

6922778 is a wasteful number, since it uses less digits than its factorization.

6922778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461391.

The product of its digits is 84672, while the sum is 41.

The square root of 6922778 is about 2631.1172531835. The cubic root of 6922778 is about 190.5870852839.

The spelling of 6922778 in words is "six million, nine hundred twenty-two thousand, seven hundred seventy-eight".