6987256471 has 8 divisors (see below), whose sum is σ = 7537564944. Its totient is φ = 6438780480.

The previous prime is 6987256469. The next prime is 6987256477. The reversal of 6987256471 is 1746527896.

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 6987256471 - 2¹ = 6987256469 is a prime.

It is a super-3 number, since 3×6987256471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6987256477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450190 + ... + 465451.

It is an arithmetic number, because the mean of its divisors is an integer number (942195618).

Almost surely, 2^6987256471 is an apocalyptic number.

6987256471 is a deficient number, since it is larger than the sum of its proper divisors (550308473).

6987256471 is a wasteful number, since it uses less digits than its factorization.

6987256471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916241.

The product of its digits is 5080320, while the sum is 55.

The square root of 6987256471 is about 83589.8108084951. The cubic root of 6987256471 is about 1911.7696445775.

The spelling of 6987256471 in words is "six billion, nine hundred eighty-seven million, two hundred fifty-six thousand, four hundred seventy-one".