6687616403 has 16 divisors (see below), whose sum is σ = 7290489696. Its totient is φ = 6097628160.

The previous prime is 6687616399. The next prime is 6687616489. The reversal of 6687616403 is 3046167866.

It is not a de Polignac number, because 6687616403 - 2² = 6687616399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6687616493) 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 15 ways as a sum of consecutive naturals, for example, 677300 + ... + 687102.

It is an arithmetic number, because the mean of its divisors is an integer number (455655606).

Almost surely, 2^6687616403 is an apocalyptic number.

6687616403 is a deficient number, since it is larger than the sum of its proper divisors (602873293).

6687616403 is a wasteful number, since it uses less digits than its factorization.

6687616403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10454.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 6687616403 is about 81777.8478745925. The cubic root of 6687616403 is about 1884.0414419649.

The spelling of 6687616403 in words is "six billion, six hundred eighty-seven million, six hundred sixteen thousand, four hundred three".