41698721 has 2 divisors, whose sum is σ = 41698722. Its totient is φ = 41698720.

The previous prime is 41698703. The next prime is 41698733. The reversal of 41698721 is 12789614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 13608721 = 5300^2 + 3689^2 .

It is a cyclic number.

It is not a de Polignac number, because 41698721 - 2²² = 37504417 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (41698421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20849360 + 20849361.

It is an arithmetic number, because the mean of its divisors is an integer number (20849361).

Almost surely, 2^41698721 is an apocalyptic number.

It is an amenable number.

41698721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41698721 is an equidigital number, since it uses as much as digits as its factorization.

41698721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 41698721 is about 6457.4546843164. The cubic root of 41698721 is about 346.7695153214.

The spelling of 41698721 in words is "forty-one million, six hundred ninety-eight thousand, seven hundred twenty-one".