6316978 has 4 divisors (see below), whose sum is σ = 9475470. Its totient is φ = 3158488.

The previous prime is 6316969. The next prime is 6317011. The reversal of 6316978 is 8796136.

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., 3892729 + 2424249 = 1973^2 + 1557^2 .

It is a super-2 number, since 2×6316978² = 79808422104968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6316978.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1579243 + ... + 1579246.

Almost surely, 2^6316978 is an apocalyptic number.

6316978 is a deficient number, since it is larger than the sum of its proper divisors (3158492).

6316978 is a wasteful number, since it uses less digits than its factorization.

6316978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158491.

The product of its digits is 54432, while the sum is 40.

The square root of 6316978 is about 2513.3599026005. The cubic root of 6316978 is about 184.8572358522.

The spelling of 6316978 in words is "six million, three hundred sixteen thousand, nine hundred seventy-eight".