2406587021 has 2 divisors, whose sum is σ = 2406587022. Its totient is φ = 2406587020.

The previous prime is 2406586999. The next prime is 2406587039. The reversal of 2406587021 is 1207856042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2161320100 + 245266921 = 46490^2 + 15661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2406587021 - 2¹⁰ = 2406585997 is a prime.

It is a super-2 number, since 2×2406587021² = 11583322179291308882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2406587081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1203293510 + 1203293511.

It is an arithmetic number, because the mean of its divisors is an integer number (1203293511).

Almost surely, 2^2406587021 is an apocalyptic number.

It is an amenable number.

2406587021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2406587021 is an equidigital number, since it uses as much as digits as its factorization.

2406587021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 2406587021 is about 49056.9772917166. The cubic root of 2406587021 is about 1340.0896615211.

The spelling of 2406587021 in words is "two billion, four hundred six million, five hundred eighty-seven thousand, twenty-one".