649282637 has 2 divisors, whose sum is σ = 649282638. Its totient is φ = 649282636.

The previous prime is 649282609. The next prime is 649282651. The reversal of 649282637 is 736282946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490799716 + 158482921 = 22154^2 + 12589^2 .

It is a cyclic number.

It is not a de Polignac number, because 649282637 - 2²⁰ = 648234061 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 649282591 and 649282600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649282607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324641318 + 324641319.

It is an arithmetic number, because the mean of its divisors is an integer number (324641319).

Almost surely, 2^649282637 is an apocalyptic number.

It is an amenable number.

649282637 is a deficient number, since it is larger than the sum of its proper divisors (1).

649282637 is an equidigital number, since it uses as much as digits as its factorization.

649282637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 47.

The square root of 649282637 is about 25481.0250382515. The cubic root of 649282637 is about 865.9203173275.

The spelling of 649282637 in words is "six hundred forty-nine million, two hundred eighty-two thousand, six hundred thirty-seven".