3666456587 has 2 divisors, whose sum is σ = 3666456588. Its totient is φ = 3666456586.

The previous prime is 3666456571. The next prime is 3666456601. The reversal of 3666456587 is 7856546663.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3666456587 - 2⁴ = 3666456571 is a prime.

It is a super-4 number, since 4×3666456587⁴ (a number of 39 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (3666456517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833228293 + 1833228294.

It is an arithmetic number, because the mean of its divisors is an integer number (1833228294).

Almost surely, 2^3666456587 is an apocalyptic number.

3666456587 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666456587 is an equidigital number, since it uses as much as digits as its factorization.

3666456587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 56.

The square root of 3666456587 is about 60551.2723813464. The cubic root of 3666456587 is about 1541.9922194016.

The spelling of 3666456587 in words is "three billion, six hundred sixty-six million, four hundred fifty-six thousand, five hundred eighty-seven".