6540377 has 4 divisors (see below), whose sum is σ = 6548496. Its totient is φ = 6532260.

The previous prime is 6540337. The next prime is 6540383. The reversal of 6540377 is 7730456.

6540377 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 6540377 - 2¹⁰ = 6539353 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6540337) 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, 2699 + ... + 4512.

It is an arithmetic number, because the mean of its divisors is an integer number (1637124).

Almost surely, 2^6540377 is an apocalyptic number.

It is an amenable number.

6540377 is a deficient number, since it is larger than the sum of its proper divisors (8119).

6540377 is an equidigital number, since it uses as much as digits as its factorization.

6540377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118.

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

The square root of 6540377 is about 2557.4160787795. The cubic root of 6540377 is about 187.0111901946.

The spelling of 6540377 in words is "six million, five hundred forty thousand, three hundred seventy-seven".