6840786147 has 16 divisors (see below), whose sum is σ = 9824699808. Its totient is φ = 4208843520.

The previous prime is 6840786079. The next prime is 6840786209. The reversal of 6840786147 is 7416870486.

It is a happy number.

It is not a de Polignac number, because 6840786147 - 2¹⁰ = 6840785123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6840786147.

It is not an unprimeable number, because it can be changed into a prime (6840786347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208623 + ... + 239175.

It is an arithmetic number, because the mean of its divisors is an integer number (614043738).

Almost surely, 2^6840786147 is an apocalyptic number.

6840786147 is a deficient number, since it is larger than the sum of its proper divisors (2983913661).

6840786147 is a wasteful number, since it uses less digits than its factorization.

6840786147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36310.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 6840786147 is about 82709.0451341327. The cubic root of 6840786147 is about 1898.3167129339.

The spelling of 6840786147 in words is "six billion, eight hundred forty million, seven hundred eighty-six thousand, one hundred forty-seven".