6545680 has 40 divisors (see below), whose sum is σ = 16117272. Its totient is φ = 2463744.

The previous prime is 6545653. The next prime is 6545687. The reversal of 6545680 is 865456.

It can be written as a sum of positive squares in 4 ways, for example, as 2085136 + 4460544 = 1444^2 + 2112^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545687) 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, 1047 + ... + 3766.

Almost surely, 2^6545680 is an apocalyptic number.

It is an amenable number.

6545680 is an abundant number, since it is smaller than the sum of its proper divisors (9571592).

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

6545680 is a wasteful number, since it uses less digits than its factorization.

6545680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843 (or 4837 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 6545680 is about 2558.4526573693. The cubic root of 6545680 is about 187.0617200255.

It can be divided in two parts, 65456 and 80, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 6545680 in words is "six million, five hundred forty-five thousand, six hundred eighty".