3479781678 has 32 divisors (see below), whose sum is σ = 6992194560. Its totient is φ = 1154502720.

The previous prime is 3479781677. The next prime is 3479781691. The reversal of 3479781678 is 8761879743.

3479781678 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3479781671) 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, 1379058 + ... + 1381578.

It is an arithmetic number, because the mean of its divisors is an integer number (218506080).

Almost surely, 2^3479781678 is an apocalyptic number.

3479781678 is an abundant number, since it is smaller than the sum of its proper divisors (3512412882).

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

3479781678 is a wasteful number, since it uses less digits than its factorization.

3479781678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512.

The product of its digits is 14224896, while the sum is 60.

The square root of 3479781678 is about 58989.6743337340. The cubic root of 3479781678 is about 1515.3652795863.

The spelling of 3479781678 in words is "three billion, four hundred seventy-nine million, seven hundred eighty-one thousand, six hundred seventy-eight".