1606449587 has 2 divisors, whose sum is σ = 1606449588. Its totient is φ = 1606449586.

The previous prime is 1606449517. The next prime is 1606449617. The reversal of 1606449587 is 7859446061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1606449587 - 2²⁰ = 1605401011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1606449517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803224793 + 803224794.

It is an arithmetic number, because the mean of its divisors is an integer number (803224794).

Almost surely, 2^1606449587 is an apocalyptic number.

1606449587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606449587 is an equidigital number, since it uses as much as digits as its factorization.

1606449587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 1606449587 is about 40080.5387563591. The cubic root of 1606449587 is about 1171.1765472537.

The spelling of 1606449587 in words is "one billion, six hundred six million, four hundred forty-nine thousand, five hundred eighty-seven".