6687429534 has 24 divisors (see below), whose sum is σ = 14553269640. Its totient is φ = 2219321808.

The previous prime is 6687429503. The next prime is 6687429547. The reversal of 6687429534 is 4359247866.

6687429534 is a `hidden beast` number, since 6 + 6 + 87 + 4 + 29 + 534 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814249 + ... + 822420.

It is an arithmetic number, because the mean of its divisors is an integer number (606386235).

Almost surely, 2^6687429534 is an apocalyptic number.

6687429534 is an abundant number, since it is smaller than the sum of its proper divisors (7865840106).

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

6687429534 is a wasteful number, since it uses less digits than its factorization.

6687429534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636904 (or 1636901 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 6687429534 is about 81776.7053261502. The cubic root of 6687429534 is about 1884.0238934993.

The spelling of 6687429534 in words is "six billion, six hundred eighty-seven million, four hundred twenty-nine thousand, five hundred thirty-four".