6906142687 has 8 divisors (see below), whose sum is σ = 7104767904. Its totient is φ = 6710047968.

The previous prime is 6906142681. The next prime is 6906142693. The reversal of 6906142687 is 7862416096.

It is an interprime number because it is at equal distance from previous prime (6906142681) and next prime (6906142693).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6906142687 - 2⁷ = 6906142559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6906142687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6906142681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627088 + ... + 638005.

It is an arithmetic number, because the mean of its divisors is an integer number (888095988).

Almost surely, 2^6906142687 is an apocalyptic number.

6906142687 is a deficient number, since it is larger than the sum of its proper divisors (198625217).

6906142687 is a wasteful number, since it uses less digits than its factorization.

6906142687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265249.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 6906142687 is about 83103.2050344630. The cubic root of 6906142687 is about 1904.3430371048.

The spelling of 6906142687 in words is "six billion, nine hundred six million, one hundred forty-two thousand, six hundred eighty-seven".