6545775 has 12 divisors (see below), whose sum is σ = 10822472. Its totient is φ = 3491040.

The previous prime is 6545771. The next prime is 6545789. The reversal of 6545775 is 5775456.

It is not a de Polignac number, because 6545775 - 2² = 6545771 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43564 + ... + 43713.

Almost surely, 2^6545775 is an apocalyptic number.

6545775 is a deficient number, since it is larger than the sum of its proper divisors (4276697).

6545775 is a wasteful number, since it uses less digits than its factorization.

6545775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87290 (or 87285 counting only the distinct ones).

The product of its digits is 147000, while the sum is 39.

The square root of 6545775 is about 2558.4712232112. The cubic root of 6545775 is about 187.0626249876.

The spelling of 6545775 in words is "six million, five hundred forty-five thousand, seven hundred seventy-five".