35716721 has 4 divisors (see below), whose sum is σ = 35772912. Its totient is φ = 35660532.

The previous prime is 35716693. The next prime is 35716727. The reversal of 35716721 is 12761753.

35716721 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12761753 = 71 ⋅179743.

It is a cyclic number.

It is not a de Polignac number, because 35716721 - 2¹⁰ = 35715697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35716727) 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, 27131 + ... + 28416.

It is an arithmetic number, because the mean of its divisors is an integer number (8943228).

Almost surely, 2^35716721 is an apocalyptic number.

It is an amenable number.

35716721 is a deficient number, since it is larger than the sum of its proper divisors (56191).

35716721 is an equidigital number, since it uses as much as digits as its factorization.

35716721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56190.

The product of its digits is 8820, while the sum is 32.

The square root of 35716721 is about 5976.3467938198. The cubic root of 35716721 is about 329.3243629871.

The spelling of 35716721 in words is "thirty-five million, seven hundred sixteen thousand, seven hundred twenty-one".