6777064907 has 4 divisors (see below), whose sum is σ = 6995679936. Its totient is φ = 6558449880.

The previous prime is 6777064871. The next prime is 6777064927. The reversal of 6777064907 is 7094607776.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6777064907 - 2¹² = 6777060811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6777064927) 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, 109307468 + ... + 109307529.

It is an arithmetic number, because the mean of its divisors is an integer number (1748919984).

Almost surely, 2^6777064907 is an apocalyptic number.

6777064907 is a deficient number, since it is larger than the sum of its proper divisors (218615029).

6777064907 is a wasteful number, since it uses less digits than its factorization.

6777064907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218615028.

The product of its (nonzero) digits is 3111696, while the sum is 53.

The square root of 6777064907 is about 82322.9306268916. The cubic root of 6777064907 is about 1892.4041060868.

The spelling of 6777064907 in words is "six billion, seven hundred seventy-seven million, sixty-four thousand, nine hundred seven".