66270587 has 2 divisors, whose sum is σ = 66270588. Its totient is φ = 66270586.

The previous prime is 66270577. The next prime is 66270593. The reversal of 66270587 is 78507266.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66270587 - 2¹⁴ = 66254203 is a prime.

It is not a weakly prime, because it can be changed into another prime (66270577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33135293 + 33135294.

It is an arithmetic number, because the mean of its divisors is an integer number (33135294).

Almost surely, 2^66270587 is an apocalyptic number.

66270587 is a deficient number, since it is larger than the sum of its proper divisors (1).

66270587 is an equidigital number, since it uses as much as digits as its factorization.

66270587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 66270587 is about 8140.6748491756. The cubic root of 66270587 is about 404.6755253047.

The spelling of 66270587 in words is "sixty-six million, two hundred seventy thousand, five hundred eighty-seven".