6489658996 has 6 divisors (see below), whose sum is σ = 11356903250. Its totient is φ = 3244829496.

The previous prime is 6489658991. The next prime is 6489659021. The reversal of 6489658996 is 6998569846.

It can be written as a sum of positive squares in only one way, i.e., 3400522596 + 3089136400 = 58314^2 + 55580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489658991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811207371 + ... + 811207378.

Almost surely, 2^6489658996 is an apocalyptic number.

It is an amenable number.

6489658996 is a deficient number, since it is larger than the sum of its proper divisors (4867244254).

6489658996 is a wasteful number, since it uses less digits than its factorization.

6489658996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622414753 (or 1622414751 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 70.

The square root of 6489658996 is about 80558.4197709960. The cubic root of 6489658996 is about 1865.2653630319.

The spelling of 6489658996 in words is "six billion, four hundred eighty-nine million, six hundred fifty-eight thousand, nine hundred ninety-six".