2466661 has 2 divisors, whose sum is σ = 2466662. Its totient is φ = 2466660.

The previous prime is 2466647. The next prime is 2466691. The reversal of 2466661 is 1666642.

2466661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2461761 + 4900 = 1569^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 2466661 - 2⁷ = 2466533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2466631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1233330 + 1233331.

It is an arithmetic number, because the mean of its divisors is an integer number (1233331).

2^2466661 is an apocalyptic number.

2466661 is the 840-th centered heptagonal number.

It is an amenable number.

2466661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2466661 is an equidigital number, since it uses as much as digits as its factorization.

2466661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 2466661 is about 1570.5607278931. The cubic root of 2466661 is about 135.1148725053.

The spelling of 2466661 in words is "two million, four hundred sixty-six thousand, six hundred sixty-one".