6405377 has 6 divisors (see below), whose sum is σ = 7040754. Its totient is φ = 5822960.

The previous prime is 6405367. The next prime is 6405391. The reversal of 6405377 is 7735046.

It can be written as a sum of positive squares in only one way, i.e., 5909761 + 495616 = 2431^2 + 704^2 .

It is not a de Polignac number, because 6405377 - 2¹⁰ = 6404353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6405367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26348 + ... + 26589.

It is an arithmetic number, because the mean of its divisors is an integer number (1173459).

Almost surely, 2^6405377 is an apocalyptic number.

It is an amenable number.

6405377 is a deficient number, since it is larger than the sum of its proper divisors (635377).

6405377 is a wasteful number, since it uses less digits than its factorization.

6405377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52959 (or 52948 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 6405377 is about 2530.8846279513. The cubic root of 6405377 is about 185.7155342548.

The spelling of 6405377 in words is "six million, four hundred five thousand, three hundred seventy-seven".