34720005 has 8 divisors (see below), whose sum is σ = 55552032. Its totient is φ = 18517328.

The previous prime is 34719991. The next prime is 34720009. The reversal of 34720005 is 50002743.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34720005 - 2⁹ = 34719493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34720009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157319 + ... + 1157348.

It is an arithmetic number, because the mean of its divisors is an integer number (6944004).

Almost surely, 2^34720005 is an apocalyptic number.

It is an amenable number.

34720005 is a deficient number, since it is larger than the sum of its proper divisors (20832027).

34720005 is a wasteful number, since it uses less digits than its factorization.

34720005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314675.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 34720005 is about 5892.3683693401. The cubic root of 34720005 is about 326.2320258444.

Adding to 34720005 its reverse (50002743), we get a palindrome (84722748).

The spelling of 34720005 in words is "thirty-four million, seven hundred twenty thousand, five".