6984638646 has 32 divisors (see below), whose sum is σ = 14185376640. Its totient is φ = 2292233856.

The previous prime is 6984638641. The next prime is 6984638657. The reversal of 6984638646 is 6468364896.

It is a self number, because there is not a number n which added to its sum of digits gives 6984638646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6984638641) 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, 1033390 + ... + 1040126.

It is an arithmetic number, because the mean of its divisors is an integer number (443293020).

Almost surely, 2^6984638646 is an apocalyptic number.

6984638646 is an abundant number, since it is smaller than the sum of its proper divisors (7200737994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6984638646 is a wasteful number, since it uses less digits than its factorization.

6984638646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9388.

The product of its digits is 35831808, while the sum is 60.

The square root of 6984638646 is about 83574.1505849745. The cubic root of 6984638646 is about 1911.5308620867.

The spelling of 6984638646 in words is "six billion, nine hundred eighty-four million, six hundred thirty-eight thousand, six hundred forty-six".