544108661 has 2 divisors, whose sum is σ = 544108662. Its totient is φ = 544108660.

The previous prime is 544108637. The next prime is 544108711. The reversal of 544108661 is 166801445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499299025 + 44809636 = 22345^2 + 6694^2 .

It is a cyclic number.

It is not a de Polignac number, because 544108661 - 2⁶ = 544108597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544104661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272054330 + 272054331.

It is an arithmetic number, because the mean of its divisors is an integer number (272054331).

Almost surely, 2^544108661 is an apocalyptic number.

It is an amenable number.

544108661 is a deficient number, since it is larger than the sum of its proper divisors (1).

544108661 is an equidigital number, since it uses as much as digits as its factorization.

544108661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 544108661 is about 23326.1368640416. The cubic root of 544108661 is about 816.3853693048.

The spelling of 544108661 in words is "five hundred forty-four million, one hundred eight thousand, six hundred sixty-one".