34786621 has 2 divisors, whose sum is σ = 34786622. Its totient is φ = 34786620.

The previous prime is 34786597. The next prime is 34786651. The reversal of 34786621 is 12668743.

34786621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17522596 + 17264025 = 4186^2 + 4155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34786621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34786651) by changing a digit.

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 as a sum of consecutive naturals, namely, 17393310 + 17393311.

It is an arithmetic number, because the mean of its divisors is an integer number (17393311).

Almost surely, 2^34786621 is an apocalyptic number.

It is an amenable number.

34786621 is a deficient number, since it is larger than the sum of its proper divisors (1).

34786621 is an equidigital number, since it uses as much as digits as its factorization.

34786621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 34786621 is about 5898.0183960378. The cubic root of 34786621 is about 326.4405356882.

It can be divided in two parts, 347 and 86621, that added together give a palindrome (86968).

The spelling of 34786621 in words is "thirty-four million, seven hundred eighty-six thousand, six hundred twenty-one".