6494981 has 2 divisors, whose sum is σ = 6494982. Its totient is φ = 6494980.

The previous prime is 6494959. The next prime is 6494987. The reversal of 6494981 is 1894946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6477025 + 17956 = 2545^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 6494981 - 2¹⁰ = 6493957 is a prime.

It is a super-2 number, since 2×6494981² = 84369556380722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6494987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3247490 + 3247491.

It is an arithmetic number, because the mean of its divisors is an integer number (3247491).

Almost surely, 2^6494981 is an apocalyptic number.

It is an amenable number.

6494981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6494981 is an equidigital number, since it uses as much as digits as its factorization.

6494981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 6494981 is about 2548.5252598317. The cubic root of 6494981 is about 186.5775109248.

The spelling of 6494981 in words is "six million, four hundred ninety-four thousand, nine hundred eighty-one".