6487278904 has 8 divisors (see below), whose sum is σ = 12163647960. Its totient is φ = 3243639448.

The previous prime is 6487278883. The next prime is 6487278907. The reversal of 6487278904 is 4098727846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6487278907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405454924 + ... + 405454939.

It is an arithmetic number, because the mean of its divisors is an integer number (1520455995).

Almost surely, 2^6487278904 is an apocalyptic number.

It is an amenable number.

6487278904 is a deficient number, since it is larger than the sum of its proper divisors (5676369056).

6487278904 is a wasteful number, since it uses less digits than its factorization.

6487278904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810909869 (or 810909865 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 55.

The square root of 6487278904 is about 80543.6459567109. The cubic root of 6487278904 is about 1865.0373055427.

The spelling of 6487278904 in words is "six billion, four hundred eighty-seven million, two hundred seventy-eight thousand, nine hundred four".