6406545 has 8 divisors (see below), whose sum is σ = 10250496. Its totient is φ = 3416816.

The previous prime is 6406529. The next prime is 6406549. The reversal of 6406545 is 5456046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6406545 - 2⁴ = 6406529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6406549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213537 + ... + 213566.

It is an arithmetic number, because the mean of its divisors is an integer number (1281312).

Almost surely, 2^6406545 is an apocalyptic number.

It is an amenable number.

6406545 is a deficient number, since it is larger than the sum of its proper divisors (3843951).

6406545 is a wasteful number, since it uses less digits than its factorization.

6406545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427111.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 6406545 is about 2531.1153667899. The cubic root of 6406545 is about 185.7268217799.

The spelling of 6406545 in words is "six million, four hundred six thousand, five hundred forty-five".