34021691 has 8 divisors (see below), whose sum is σ = 37422768. Its totient is φ = 30927600.

The previous prime is 34021679. The next prime is 34021697. The reversal of 34021691 is 19612043.

It is a de Polignac number, because none of the positive numbers 2^k-34021691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34021691.

It is not an unprimeable number, because it can be changed into a prime (34021697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11450 + ... + 14111.

It is an arithmetic number, because the mean of its divisors is an integer number (4677846).

Almost surely, 2^34021691 is an apocalyptic number.

34021691 is a deficient number, since it is larger than the sum of its proper divisors (3401077).

34021691 is an equidigital number, since it uses as much as digits as its factorization.

34021691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25594 (or 25572 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 34021691 is about 5832.8115861907. The cubic root of 34021691 is about 324.0300580507.

The spelling of 34021691 in words is "thirty-four million, twenty-one thousand, six hundred ninety-one".