6378916 has 6 divisors (see below), whose sum is σ = 11163110. Its totient is φ = 3189456.

The previous prime is 6378913. The next prime is 6378919. The reversal of 6378916 is 6198736.

6378916 = 504² + 505² + ... + 527².

It is an interprime number because it is at equal distance from previous prime (6378913) and next prime (6378919).

It can be written as a sum of positive squares in only one way, i.e., 6270016 + 108900 = 2504^2 + 330^2 .

It is not an unprimeable number, because it can be changed into a prime (6378913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 797361 + ... + 797368.

Almost surely, 2^6378916 is an apocalyptic number.

It is an amenable number.

6378916 is a deficient number, since it is larger than the sum of its proper divisors (4784194).

6378916 is a wasteful number, since it uses less digits than its factorization.

6378916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594733 (or 1594731 counting only the distinct ones).

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

The square root of 6378916 is about 2525.6515990928. The cubic root of 6378916 is about 185.4594472566.

The spelling of 6378916 in words is "six million, three hundred seventy-eight thousand, nine hundred sixteen".