649662201 has 28 divisors (see below), whose sum is σ = 980748900. Its totient is φ = 430129440.

The previous prime is 649662121. The next prime is 649662203. The reversal of 649662201 is 102266946.

649662201 is a `hidden beast` number, since 649 + 6 + 6 + 2 + 2 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41990400 + 607671801 = 6480^2 + 24651^2 .

It is not a de Polignac number, because 649662201 - 2¹³ = 649654009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (649662203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 105631 + ... + 111611.

Almost surely, 2^649662201 is an apocalyptic number.

It is an amenable number.

649662201 is a deficient number, since it is larger than the sum of its proper divisors (331086699).

649662201 is an equidigital number, since it uses as much as digits as its factorization.

649662201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6148 (or 6133 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 649662201 is about 25488.4719235971. The cubic root of 649662201 is about 866.0890205163.

The spelling of 649662201 in words is "six hundred forty-nine million, six hundred sixty-two thousand, two hundred one".