6540345 has 48 divisors (see below), whose sum is σ = 13453440. Its totient is φ = 2985984.

The previous prime is 6540337. The next prime is 6540383. The reversal of 6540345 is 5430456.

6540345 is a `hidden beast` number, since 654 + 0 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 6540345 - 2³ = 6540337 is a prime.

It is a super-2 number, since 2×6540345² = 85552225438050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

6540345 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8121 + ... + 8889.

It is an arithmetic number, because the mean of its divisors is an integer number (280280).

Almost surely, 2^6540345 is an apocalyptic number.

It is an amenable number.

6540345 is an abundant number, since it is smaller than the sum of its proper divisors (6913095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6540345 is an equidigital number, since it uses as much as digits as its factorization.

6540345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 6540345 is about 2557.4098224571. The cubic root of 6540345 is about 187.0108851986.

The spelling of 6540345 in words is "six million, five hundred forty thousand, three hundred forty-five".