6561298 has 4 divisors (see below), whose sum is σ = 9841950. Its totient is φ = 3280648.

The previous prime is 6561293. The next prime is 6561307. The reversal of 6561298 is 8921656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4826809 + 1734489 = 2197^2 + 1317^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (6561293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640323 + ... + 1640326.

Almost surely, 2^6561298 is an apocalyptic number.

6561298 is a deficient number, since it is larger than the sum of its proper divisors (3280652).

6561298 is a wasteful number, since it uses less digits than its factorization.

6561298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280651.

The product of its digits is 25920, while the sum is 37.

The square root of 6561298 is about 2561.5030743686. The cubic root of 6561298 is about 187.2103783481.

It can be divided in two parts, 6561 and 298, that added together give a cube (6859 = 19³).

The spelling of 6561298 in words is "six million, five hundred sixty-one thousand, two hundred ninety-eight".