649834753 has 2 divisors, whose sum is σ = 649834754. Its totient is φ = 649834752.

The previous prime is 649834739. The next prime is 649834763. The reversal of 649834753 is 357438946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604028929 + 45805824 = 24577^2 + 6768^2 .

It is a cyclic number.

It is not a de Polignac number, because 649834753 - 2²⁹ = 112963841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 649834697 and 649834706.

It is not a weakly prime, because it can be changed into another prime (649834723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324917376 + 324917377.

It is an arithmetic number, because the mean of its divisors is an integer number (324917377).

Almost surely, 2^649834753 is an apocalyptic number.

It is an amenable number.

649834753 is a deficient number, since it is larger than the sum of its proper divisors (1).

649834753 is an equidigital number, since it uses as much as digits as its factorization.

649834753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 49.

The square root of 649834753 is about 25491.8566016679. The cubic root of 649834753 is about 866.1656922407.

The spelling of 649834753 in words is "six hundred forty-nine million, eight hundred thirty-four thousand, seven hundred fifty-three".