648834963 has 16 divisors (see below), whose sum is σ = 1012816896. Its totient is φ = 361719360.

The previous prime is 648834961. The next prime is 648834973. The reversal of 648834963 is 369438846.

It is a happy number.

It is not a de Polignac number, because 648834963 - 2¹ = 648834961 is a prime.

It is a super-2 number, since 2×648834963² = 841973618422422738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (648834961) 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 15 ways as a sum of consecutive naturals, for example, 375931 + ... + 377652.

It is an arithmetic number, because the mean of its divisors is an integer number (63301056).

Almost surely, 2^648834963 is an apocalyptic number.

648834963 is a deficient number, since it is larger than the sum of its proper divisors (363981933).

648834963 is a wasteful number, since it uses less digits than its factorization.

648834963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753634.

The product of its digits is 2985984, while the sum is 51.

The square root of 648834963 is about 25472.2390653040. The cubic root of 648834963 is about 865.7212570530.

The spelling of 648834963 in words is "six hundred forty-eight million, eight hundred thirty-four thousand, nine hundred sixty-three".