6461289 has 10 divisors (see below), whose sum is σ = 9652170. Its totient is φ = 4307472.

The previous prime is 6461269. The next prime is 6461317. The reversal of 6461289 is 9821646.

6461289 is a `hidden beast` number, since 646 + 1 + 2 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6350400 + 110889 = 2520^2 + 333^2 .

It is not a de Polignac number, because 6461289 - 2¹⁷ = 6330217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6461209) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39804 + ... + 39965.

It is an arithmetic number, because the mean of its divisors is an integer number (965217).

Almost surely, 2^6461289 is an apocalyptic number.

It is an amenable number.

6461289 is a deficient number, since it is larger than the sum of its proper divisors (3190881).

6461289 is an equidigital number, since it uses as much as digits as its factorization.

6461289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79781 (or 79772 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 6461289 is about 2541.9065679131. The cubic root of 6461289 is about 186.2543346888.

The spelling of 6461289 in words is "six million, four hundred sixty-one thousand, two hundred eighty-nine".