649785053 has 2 divisors, whose sum is σ = 649785054. Its totient is φ = 649785052.

The previous prime is 649785013. The next prime is 649785061. The reversal of 649785053 is 350587946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 485893849 + 163891204 = 22043^2 + 12802^2 .

It is a cyclic number.

It is not a de Polignac number, because 649785053 - 2¹⁰ = 649784029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 649784989 and 649785007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649785013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324892526 + 324892527.

It is an arithmetic number, because the mean of its divisors is an integer number (324892527).

Almost surely, 2^649785053 is an apocalyptic number.

It is an amenable number.

649785053 is a deficient number, since it is larger than the sum of its proper divisors (1).

649785053 is an equidigital number, since it uses as much as digits as its factorization.

649785053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 649785053 is about 25490.8817619164. The cubic root of 649785053 is about 866.1436099435.

The spelling of 649785053 in words is "six hundred forty-nine million, seven hundred eighty-five thousand, fifty-three".