6349778 has 4 divisors (see below), whose sum is σ = 9524670. Its totient is φ = 3174888.

The previous prime is 6349751. The next prime is 6349787. The reversal of 6349778 is 8779436.

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., 4255969 + 2093809 = 2063^2 + 1447^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1587443 + ... + 1587446.

Almost surely, 2^6349778 is an apocalyptic number.

6349778 is a deficient number, since it is larger than the sum of its proper divisors (3174892).

6349778 is a wasteful number, since it uses less digits than its factorization.

6349778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174891.

The product of its digits is 254016, while the sum is 44.

The square root of 6349778 is about 2519.8765842795. The cubic root of 6349778 is about 185.1766318884.

The spelling of 6349778 in words is "six million, three hundred forty-nine thousand, seven hundred seventy-eight".