649031003 has 2 divisors, whose sum is σ = 649031004. Its totient is φ = 649031002.

The previous prime is 649030999. The next prime is 649031063. The reversal of 649031003 is 300130946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 649031003 - 2² = 649030999 is a prime.

It is not a weakly prime, because it can be changed into another prime (649031063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324515501 + 324515502.

It is an arithmetic number, because the mean of its divisors is an integer number (324515502).

Almost surely, 2^649031003 is an apocalyptic number.

649031003 is a deficient number, since it is larger than the sum of its proper divisors (1).

649031003 is an equidigital number, since it uses as much as digits as its factorization.

649031003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 649031003 is about 25476.0868855482. The cubic root of 649031003 is about 865.8084383934.

Adding to 649031003 its reverse (300130946), we get a palindrome (949161949).

The spelling of 649031003 in words is "six hundred forty-nine million, thirty-one thousand, three".