6491061 has 6 divisors (see below), whose sum is σ = 9375990. Its totient is φ = 4327368.

The previous prime is 6491047. The next prime is 6491081. The reversal of 6491061 is 1601946.

6491061 is a `hidden beast` number, since 649 + 10 + 6 + 1 = 666.

6491061 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4223025 + 2268036 = 2055^2 + 1506^2 .

It is not a de Polignac number, because 6491061 - 2¹⁰ = 6490037 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360606 + ... + 360623.

It is an arithmetic number, because the mean of its divisors is an integer number (1562665).

Almost surely, 2^6491061 is an apocalyptic number.

It is an amenable number.

6491061 is a deficient number, since it is larger than the sum of its proper divisors (2884929).

6491061 is a wasteful number, since it uses less digits than its factorization.

6491061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721235 (or 721232 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 6491061 is about 2547.7560715265. The cubic root of 6491061 is about 186.5399675236.

It can be divided in two parts, 64 and 91061, that added together give a cube (91125 = 45³).

The spelling of 6491061 in words is "six million, four hundred ninety-one thousand, sixty-one".