6480261 has 12 divisors (see below), whose sum is σ = 9454380. Its totient is φ = 4276800.

The previous prime is 6480259. The next prime is 6480263. The reversal of 6480261 is 1620846.

It is an interprime number because it is at equal distance from previous prime (6480259) and next prime (6480263).

It can be written as a sum of positive squares in 2 ways, for example, as 5377761 + 1102500 = 2319^2 + 1050^2 .

It is not a de Polignac number, because 6480261 - 2¹ = 6480259 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6480263) 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, 2656 + ... + 4473.

It is an arithmetic number, because the mean of its divisors is an integer number (787865).

Almost surely, 2^6480261 is an apocalyptic number.

It is an amenable number.

6480261 is a deficient number, since it is larger than the sum of its proper divisors (2974119).

6480261 is a wasteful number, since it uses less digits than its factorization.

6480261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236 (or 7233 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 6480261 is about 2545.6356769970. The cubic root of 6480261 is about 186.4364533720.

The spelling of 6480261 in words is "six million, four hundred eighty thousand, two hundred sixty-one".