15704641 has 2 divisors, whose sum is σ = 15704642. Its totient is φ = 15704640.

The previous prime is 15704639. The next prime is 15704657. The reversal of 15704641 is 14640751.

15704641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 1679616 = 3745^2 + 1296^2 .

It is an emirp because it is prime and its reverse (14640751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15704641 - 2¹ = 15704639 is a prime.

Together with 15704639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15704671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7852320 + 7852321.

It is an arithmetic number, because the mean of its divisors is an integer number (7852321).

Almost surely, 2^15704641 is an apocalyptic number.

It is an amenable number.

15704641 is a deficient number, since it is larger than the sum of its proper divisors (1).

15704641 is an equidigital number, since it uses as much as digits as its factorization.

15704641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 15704641 is about 3962.9081493267. The cubic root of 15704641 is about 250.4240323795.

The spelling of 15704641 in words is "fifteen million, seven hundred four thousand, six hundred forty-one".