6349978607 has 16 divisors (see below), whose sum is σ = 7437283392. Its totient is φ = 5307828480.

The previous prime is 6349978571. The next prime is 6349978637. The reversal of 6349978607 is 7068799436.

It is a cyclic number.

It is not a de Polignac number, because 6349978607 - 2²⁰ = 6348930031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6349978637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1316933 + ... + 1321745.

It is an arithmetic number, because the mean of its divisors is an integer number (464830212).

Almost surely, 2^6349978607 is an apocalyptic number.

6349978607 is a deficient number, since it is larger than the sum of its proper divisors (1087304785).

6349978607 is a wasteful number, since it uses less digits than its factorization.

6349978607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9458.

The product of its (nonzero) digits is 13716864, while the sum is 59.

The square root of 6349978607 is about 79686.7530208127. The cubic root of 6349978607 is about 1851.7858194804.

The spelling of 6349978607 in words is "six billion, three hundred forty-nine million, nine hundred seventy-eight thousand, six hundred seven".