2416721 has 2 divisors, whose sum is σ = 2416722. Its totient is φ = 2416720.

The previous prime is 2416717. The next prime is 2416727. The reversal of 2416721 is 1276142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1597696 + 819025 = 1264^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2416721 - 2² = 2416717 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2416727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1208360 + 1208361.

It is an arithmetic number, because the mean of its divisors is an integer number (1208361).

2^2416721 is an apocalyptic number.

It is an amenable number.

2416721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2416721 is an equidigital number, since it uses as much as digits as its factorization.

2416721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 2416721 is about 1554.5806508509. The cubic root of 2416721 is about 134.1968037097.

The spelling of 2416721 in words is "two million, four hundred sixteen thousand, seven hundred twenty-one".