6377409 has 6 divisors (see below), whose sum is σ = 9211826. Its totient is φ = 4251600.

The previous prime is 6377401. The next prime is 6377411. The reversal of 6377409 is 9047736.

It can be written as a sum of positive squares in only one way, i.e., 3504384 + 2873025 = 1872^2 + 1695^2 .

It is not a de Polignac number, because 6377409 - 2³ = 6377401 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (6377401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 354292 + ... + 354309.

Almost surely, 2^6377409 is an apocalyptic number.

It is an amenable number.

6377409 is a deficient number, since it is larger than the sum of its proper divisors (2834417).

6377409 is a wasteful number, since it uses less digits than its factorization.

6377409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708607 (or 708604 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 6377409 is about 2525.3532426178. The cubic root of 6377409 is about 185.4448413581. Note that the first 3 decimals are identical.

It can be divided in two parts, 6377 and 409, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 6377409 in words is "six million, three hundred seventy-seven thousand, four hundred nine".