649653001 has 2 divisors, whose sum is σ = 649653002. Its totient is φ = 649653000.

The previous prime is 649652999. The next prime is 649653013. The reversal of 649653001 is 100356946.

649653001 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., 637057600 + 12595401 = 25240^2 + 3549^2 .

It is a cyclic number.

It is not a de Polignac number, because 649653001 - 2¹ = 649652999 is a prime.

Together with 649652999, it forms a pair of twin primes.

It is equal to p_33776341 and since 649653001 and 33776341 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (649653091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324826500 + 324826501.

It is an arithmetic number, because the mean of its divisors is an integer number (324826501).

Almost surely, 2^649653001 is an apocalyptic number.

It is an amenable number.

649653001 is a deficient number, since it is larger than the sum of its proper divisors (1).

649653001 is an equidigital number, since it uses as much as digits as its factorization.

649653001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 649653001 is about 25488.2914492125. The cubic root of 649653001 is about 866.0849322088.

The spelling of 649653001 in words is "six hundred forty-nine million, six hundred fifty-three thousand, one".