6978898487 has 12 divisors (see below), whose sum is σ = 8004546480. Its totient is φ = 6068604960.

The previous prime is 6978898483. The next prime is 6978898499. The reversal of 6978898487 is 7848988796.

It is not a de Polignac number, because 6978898487 - 2² = 6978898483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978898481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1251062 + ... + 1256627.

It is an arithmetic number, because the mean of its divisors is an integer number (667045540).

Almost surely, 2^6978898487 is an apocalyptic number.

6978898487 is a deficient number, since it is larger than the sum of its proper divisors (1025647993).

6978898487 is a wasteful number, since it uses less digits than its factorization.

6978898487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507734 (or 2507723 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 74.

The square root of 6978898487 is about 83539.8018132674. The cubic root of 6978898487 is about 1911.0070698603.

The spelling of 6978898487 in words is "six billion, nine hundred seventy-eight million, eight hundred ninety-eight thousand, four hundred eighty-seven".