6684964251 has 32 divisors (see below), whose sum is σ = 10269388800. Its totient is φ = 3789050400.

The previous prime is 6684964243. The next prime is 6684964259. The reversal of 6684964251 is 1524694866.

It is an interprime number because it is at equal distance from previous prime (6684964243) and next prime (6684964259).

It is not a de Polignac number, because 6684964251 - 2³ = 6684964243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6684964194 and 6684964203.

It is not an unprimeable number, because it can be changed into a prime (6684964259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1648176 + ... + 1652226.

It is an arithmetic number, because the mean of its divisors is an integer number (320918400).

Almost surely, 2^6684964251 is an apocalyptic number.

6684964251 is a deficient number, since it is larger than the sum of its proper divisors (3584424549).

6684964251 is a wasteful number, since it uses less digits than its factorization.

6684964251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679.

The product of its digits is 2488320, while the sum is 51.

The square root of 6684964251 is about 81761.6306772315. The cubic root of 6684964251 is about 1883.7923534678.

The spelling of 6684964251 in words is "six billion, six hundred eighty-four million, nine hundred sixty-four thousand, two hundred fifty-one".