649358963 has 8 divisors (see below), whose sum is σ = 714247536. Its totient is φ = 590325120.

The previous prime is 649358939. The next prime is 649358993. The reversal of 649358963 is 369853946.

It is not a de Polignac number, because 649358963 - 2¹⁴ = 649342579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649358903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242606 + ... + 245267.

It is an arithmetic number, because the mean of its divisors is an integer number (89280942).

Almost surely, 2^649358963 is an apocalyptic number.

649358963 is a deficient number, since it is larger than the sum of its proper divisors (64888573).

649358963 is an equidigital number, since it uses as much as digits as its factorization.

649358963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487906 (or 487884 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 53.

The square root of 649358963 is about 25482.5226969388. The cubic root of 649358963 is about 865.9542468987.

It can be divided in two parts, 6493 and 58963, that added together give a palindrome (65456).

The spelling of 649358963 in words is "six hundred forty-nine million, three hundred fifty-eight thousand, nine hundred sixty-three".