648328963 has 8 divisors (see below), whose sum is σ = 683439120. Its totient is φ = 613317600.

The previous prime is 648328957. The next prime is 648328969. The reversal of 648328963 is 369823846.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (648328957) and next prime (648328969).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648328963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648328969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11020 + ... + 37657.

It is an arithmetic number, because the mean of its divisors is an integer number (85429890).

Almost surely, 2^648328963 is an apocalyptic number.

648328963 is a deficient number, since it is larger than the sum of its proper divisors (35110157).

648328963 is a wasteful number, since it uses less digits than its factorization.

648328963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49397.

The product of its digits is 1492992, while the sum is 49.

The square root of 648328963 is about 25462.3047464286. The cubic root of 648328963 is about 865.4961515926.

The spelling of 648328963 in words is "six hundred forty-eight million, three hundred twenty-eight thousand, nine hundred sixty-three".