66053287 has 2 divisors, whose sum is σ = 66053288. Its totient is φ = 66053286.

The previous prime is 66053261. The next prime is 66053297. The reversal of 66053287 is 78235066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66053287 - 2¹⁵ = 66020519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66053227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33026643 + 33026644.

It is an arithmetic number, because the mean of its divisors is an integer number (33026644).

Almost surely, 2^66053287 is an apocalyptic number.

66053287 is a deficient number, since it is larger than the sum of its proper divisors (1).

66053287 is an equidigital number, since it uses as much as digits as its factorization.

66053287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 66053287 is about 8127.3173310755. The cubic root of 66053287 is about 404.2327331874.

The spelling of 66053287 in words is "sixty-six million, fifty-three thousand, two hundred eighty-seven".