6949778 has 8 divisors (see below), whose sum is σ = 11372400. Its totient is φ = 3158980.

The previous prime is 6949777. The next prime is 6949783. The reversal of 6949778 is 8779496.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 6⁴ + 9² + 4⁸ + 9⁷ + 7³ + 7⁴ + 8⁷ .

It is not an unprimeable number, because it can be changed into a prime (6949777) 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, 157928 + ... + 157971.

It is an arithmetic number, because the mean of its divisors is an integer number (1421550).

Almost surely, 2^6949778 is an apocalyptic number.

6949778 is a deficient number, since it is larger than the sum of its proper divisors (4422622).

6949778 is a wasteful number, since it uses less digits than its factorization.

6949778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315912.

The product of its digits is 762048, while the sum is 50.

The square root of 6949778 is about 2636.2431602567. The cubic root of 6949778 is about 190.8345377692.

The spelling of 6949778 in words is "six million, nine hundred forty-nine thousand, seven hundred seventy-eight".