66314887 has 2 divisors, whose sum is σ = 66314888. Its totient is φ = 66314886.

The previous prime is 66314881. The next prime is 66314929. The reversal of 66314887 is 78841366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66314887 - 2¹¹ = 66312839 is a prime.

It is a pancake number, because a pancake can be divided into 66314887 parts by 11516 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66314881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33157443 + 33157444.

It is an arithmetic number, because the mean of its divisors is an integer number (33157444).

Almost surely, 2^66314887 is an apocalyptic number.

66314887 is a deficient number, since it is larger than the sum of its proper divisors (1).

66314887 is an equidigital number, since it uses as much as digits as its factorization.

66314887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 66314887 is about 8143.3952992594. The cubic root of 66314887 is about 404.7656765743.

The spelling of 66314887 in words is "sixty-six million, three hundred fourteen thousand, eight hundred eighty-seven".