6777648007 has 4 divisors (see below), whose sum is σ = 7299005560. Its totient is φ = 6256290456.

The previous prime is 6777647993. The next prime is 6777648041. The reversal of 6777648007 is 7008467776.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6777648007 - 2¹⁵ = 6777615239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6777648307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260678757 + ... + 260678782.

It is an arithmetic number, because the mean of its divisors is an integer number (1824751390).

Almost surely, 2^6777648007 is an apocalyptic number.

6777648007 is a deficient number, since it is larger than the sum of its proper divisors (521357553).

6777648007 is a wasteful number, since it uses less digits than its factorization.

6777648007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521357552.

The product of its (nonzero) digits is 2765952, while the sum is 52.

The square root of 6777648007 is about 82326.4720913024. The cubic root of 6777648007 is about 1892.4583788044.

The spelling of 6777648007 in words is "six billion, seven hundred seventy-seven million, six hundred forty-eight thousand, seven".