6779137 has 4 divisors (see below), whose sum is σ = 6784516. Its totient is φ = 6773760.

The previous prime is 6779131. The next prime is 6779147. The reversal of 6779137 is 7319776.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5424241 + 1354896 = 2329^2 + 1164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6779137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6779137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779131) 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, 337 + ... + 3697.

It is an arithmetic number, because the mean of its divisors is an integer number (1696129).

It is a Poulet number, since it divides 2^6779136-1.

Almost surely, 2^6779137 is an apocalyptic number.

It is an amenable number.

6779137 is a deficient number, since it is larger than the sum of its proper divisors (5379).

6779137 is a wasteful number, since it uses less digits than its factorization.

6779137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378.

The product of its digits is 55566, while the sum is 40.

The square root of 6779137 is about 2603.6775914080. The cubic root of 6779137 is about 189.2596954455.

The spelling of 6779137 in words is "six million, seven hundred seventy-nine thousand, one hundred thirty-seven".