6477210077 has 4 divisors (see below), whose sum is σ = 6975457020. Its totient is φ = 5978963136.

The previous prime is 6477210073. The next prime is 6477210101. The reversal of 6477210077 is 7700127746.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2808364036 + 3668846041 = 52994^2 + 60571^2 .

It is a cyclic number.

It is not a de Polignac number, because 6477210077 - 2² = 6477210073 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 (6477210073) 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, 249123452 + ... + 249123477.

It is an arithmetic number, because the mean of its divisors is an integer number (1743864255).

Almost surely, 2^6477210077 is an apocalyptic number.

It is an amenable number.

6477210077 is a deficient number, since it is larger than the sum of its proper divisors (498246943).

6477210077 is a wasteful number, since it uses less digits than its factorization.

6477210077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498246942.

The product of its (nonzero) digits is 115248, while the sum is 41.

The square root of 6477210077 is about 80481.1162758072. The cubic root of 6477210077 is about 1864.0719053053.

The spelling of 6477210077 in words is "six billion, four hundred seventy-seven million, two hundred ten thousand, seventy-seven".