614405621 has 2 divisors, whose sum is σ = 614405622. Its totient is φ = 614405620.

The previous prime is 614405599. The next prime is 614405633. The reversal of 614405621 is 126504416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451562500 + 162843121 = 21250^2 + 12761^2 .

It is a cyclic number.

It is not a de Polignac number, because 614405621 - 2⁶ = 614405557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (614405651) 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, 307202810 + 307202811.

It is an arithmetic number, because the mean of its divisors is an integer number (307202811).

Almost surely, 2^614405621 is an apocalyptic number.

It is an amenable number.

614405621 is a deficient number, since it is larger than the sum of its proper divisors (1).

614405621 is an equidigital number, since it uses as much as digits as its factorization.

614405621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 614405621 is about 24787.2068010900. The cubic root of 614405621 is about 850.1294478746.

The spelling of 614405621 in words is "six hundred fourteen million, four hundred five thousand, six hundred twenty-one".