34995721 has 4 divisors (see below), whose sum is σ = 36202500. Its totient is φ = 33788944.

The previous prime is 34995713. The next prime is 34995749. The reversal of 34995721 is 12759943.

34995721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 27510025 + 7485696 = 5245^2 + 2736^2 .

It is not a de Polignac number, because 34995721 - 2³ = 34995713 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34995781) 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 in 3 ways as a sum of consecutive naturals, for example, 603346 + ... + 603403.

It is an arithmetic number, because the mean of its divisors is an integer number (9050625).

Almost surely, 2^34995721 is an apocalyptic number.

It is an amenable number.

34995721 is a deficient number, since it is larger than the sum of its proper divisors (1206779).

34995721 is a wasteful number, since it uses less digits than its factorization.

34995721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206778.

The product of its digits is 68040, while the sum is 40.

The square root of 34995721 is about 5915.7181305400. The cubic root of 34995721 is about 327.0933001015.

The spelling of 34995721 in words is "thirty-four million, nine hundred ninety-five thousand, seven hundred twenty-one".