6514649856 has 450 divisors, whose sum is σ = 22957355652. Its totient is φ = 1822279680.

The previous prime is 6514649839. The next prime is 6514649861. The reversal of 6514649856 is 6589464156.

6514649856 is a `hidden beast` number, since 6 + 5 + 146 + 498 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 501126906 + ... + 501126918.

Almost surely, 2^6514649856 is an apocalyptic number.

6514649856 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6514649856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11478677826).

6514649856 is an abundant number, since it is smaller than the sum of its proper divisors (16442705796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6514649856 is an frugal number, since it uses more digits than its factorization.

6514649856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 29 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 6514649856 is about 80713.3808980890. The cubic root of 6514649856 is about 1867.6565969231.

The spelling of 6514649856 in words is "six billion, five hundred fourteen million, six hundred forty-nine thousand, eight hundred fifty-six".