6779977 has 4 divisors (see below), whose sum is σ = 6786000. Its totient is φ = 6773956.

The previous prime is 6779953. The next prime is 6779987. The reversal of 6779977 is 7799776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6779977 - 2⁷ = 6779849 is a prime.

It is a Duffinian number.

6779977 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6779987) 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, 763 + ... + 3760.

It is an arithmetic number, because the mean of its divisors is an integer number (1696500).

Almost surely, 2^6779977 is an apocalyptic number.

It is an amenable number.

6779977 is a deficient number, since it is larger than the sum of its proper divisors (6023).

6779977 is a wasteful number, since it uses less digits than its factorization.

6779977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022.

The product of its digits is 1166886, while the sum is 52.

The square root of 6779977 is about 2603.8388967062. The cubic root of 6779977 is about 189.2675121523.

It can be divided in two parts, 67799 and 77, that added together give a palindrome (67876).

The spelling of 6779977 in words is "six million, seven hundred seventy-nine thousand, nine hundred seventy-seven".