546406649 has 2 divisors, whose sum is σ = 546406650. Its totient is φ = 546406648.

The previous prime is 546406643. The next prime is 546406687. The reversal of 546406649 is 946604645.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321556624 + 224850025 = 17932^2 + 14995^2 .

It is a cyclic number.

It is not a de Polignac number, because 546406649 - 2²⁸ = 277971193 is a prime.

It is not a weakly prime, because it can be changed into another prime (546406643) 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, 273203324 + 273203325.

It is an arithmetic number, because the mean of its divisors is an integer number (273203325).

Almost surely, 2^546406649 is an apocalyptic number.

It is an amenable number.

546406649 is a deficient number, since it is larger than the sum of its proper divisors (1).

546406649 is an equidigital number, since it uses as much as digits as its factorization.

546406649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 44.

The square root of 546406649 is about 23375.3427568453. The cubic root of 546406649 is about 817.5330621598.

The spelling of 546406649 in words is "five hundred forty-six million, four hundred six thousand, six hundred forty-nine".