34720686 has 192 divisors, whose sum is σ = 105670656. Its totient is φ = 7948800.

The previous prime is 34720667. The next prime is 34720691. The reversal of 34720686 is 68602743.

34720686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 34720686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 738715 + ... + 738761.

It is an arithmetic number, because the mean of its divisors is an integer number (550368).

Almost surely, 2^34720686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34720686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52835328).

34720686 is an abundant number, since it is smaller than the sum of its proper divisors (70949970).

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

34720686 is a wasteful number, since it uses less digits than its factorization.

34720686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 34720686 is about 5892.4261556680. The cubic root of 34720686 is about 326.2341587411.

The spelling of 34720686 in words is "thirty-four million, seven hundred twenty thousand, six hundred eighty-six".