6487978486 has 16 divisors (see below), whose sum is σ = 10622259648. Its totient is φ = 2947534600.

The previous prime is 6487978463. The next prime is 6487978489. The reversal of 6487978486 is 6848797846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6487978489) 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, 33880 + ... + 118843.

It is an arithmetic number, because the mean of its divisors is an integer number (663891228).

Almost surely, 2^6487978486 is an apocalyptic number.

6487978486 is a deficient number, since it is larger than the sum of its proper divisors (4134281162).

6487978486 is a wasteful number, since it uses less digits than its factorization.

6487978486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154667.

The product of its digits is 130056192, while the sum is 67.

The square root of 6487978486 is about 80547.9887148028. The cubic root of 6487978486 is about 1865.1043444172.

The spelling of 6487978486 in words is "six billion, four hundred eighty-seven million, nine hundred seventy-eight thousand, four hundred eighty-six".