6634778 has 8 divisors (see below), whose sum is σ = 9972768. Its totient is φ = 3310524.

The previous prime is 6634769. The next prime is 6634783. The reversal of 6634778 is 8774366.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 4217.

It is an arithmetic number, because the mean of its divisors is an integer number (1246596).

Almost surely, 2^6634778 is an apocalyptic number.

6634778 is a deficient number, since it is larger than the sum of its proper divisors (3337990).

6634778 is a wasteful number, since it uses less digits than its factorization.

6634778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868.

The product of its digits is 169344, while the sum is 41.

The square root of 6634778 is about 2575.8062815359. The cubic root of 6634778 is about 187.9066421945.

The spelling of 6634778 in words is "six million, six hundred thirty-four thousand, seven hundred seventy-eight".