34885721 has 4 divisors (see below), whose sum is σ = 37569252. Its totient is φ = 32202192.

The previous prime is 34885679. The next prime is 34885769. The reversal of 34885721 is 12758843.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8620096 + 26265625 = 2936^2 + 5125^2 .

It is a cyclic number.

It is not a de Polignac number, because 34885721 - 2¹⁴ = 34869337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34885621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341746 + ... + 1341771.

It is an arithmetic number, because the mean of its divisors is an integer number (9392313).

Almost surely, 2^34885721 is an apocalyptic number.

It is an amenable number.

34885721 is a deficient number, since it is larger than the sum of its proper divisors (2683531).

34885721 is a wasteful number, since it uses less digits than its factorization.

34885721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683530.

The product of its digits is 53760, while the sum is 38.

The square root of 34885721 is about 5906.4135480002. The cubic root of 34885721 is about 326.7502293282.

The spelling of 34885721 in words is "thirty-four million, eight hundred eighty-five thousand, seven hundred twenty-one".