6687357402 has 32 divisors (see below), whose sum is σ = 14719734720. Its totient is φ = 2008536320.

The previous prime is 6687357379. The next prime is 6687357403. The reversal of 6687357402 is 2047537866.

It is not an unprimeable number, because it can be changed into a prime (6687357403) 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, 440877 + ... + 455792.

It is an arithmetic number, because the mean of its divisors is an integer number (459991710).

Almost surely, 2^6687357402 is an apocalyptic number.

6687357402 is an abundant number, since it is smaller than the sum of its proper divisors (8032377318).

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

6687357402 is a wasteful number, since it uses less digits than its factorization.

6687357402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896798.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The square root of 6687357402 is about 81776.2642947206. The cubic root of 6687357402 is about 1884.0171196510.

The spelling of 6687357402 in words is "six billion, six hundred eighty-seven million, three hundred fifty-seven thousand, four hundred two".