906075649 has 2 divisors, whose sum is σ = 906075650. Its totient is φ = 906075648.

The previous prime is 906075641. The next prime is 906075671. The reversal of 906075649 is 946570609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627853249 + 278222400 = 25057^2 + 16680^2 .

It is an emirp because it is prime and its reverse (946570609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 906075649 - 2³ = 906075641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 906075599 and 906075608.

It is not a weakly prime, because it can be changed into another prime (906075641) 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, 453037824 + 453037825.

It is an arithmetic number, because the mean of its divisors is an integer number (453037825).

Almost surely, 2^906075649 is an apocalyptic number.

It is an amenable number.

906075649 is a deficient number, since it is larger than the sum of its proper divisors (1).

906075649 is an equidigital number, since it uses as much as digits as its factorization.

906075649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 906075649 is about 30101.0904951963. The cubic root of 906075649 is about 967.6570972146.

The spelling of 906075649 in words is "nine hundred six million, seventy-five thousand, six hundred forty-nine".