66677059 has 4 divisors (see below), whose sum is σ = 66805560. Its totient is φ = 66548560.

The previous prime is 66677057. The next prime is 66677089. The reversal of 66677059 is 95077666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95077666 = 2 ⋅47538833.

It is a cyclic number.

It is not a de Polignac number, because 66677059 - 2¹ = 66677057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66677057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63469 + ... + 64510.

It is an arithmetic number, because the mean of its divisors is an integer number (16701390).

Almost surely, 2^66677059 is an apocalyptic number.

66677059 is a deficient number, since it is larger than the sum of its proper divisors (128501).

66677059 is a wasteful number, since it uses less digits than its factorization.

66677059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128500.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 66677059 is about 8165.6021823256. The cubic root of 66677059 is about 405.5012013670.

The spelling of 66677059 in words is "sixty-six million, six hundred seventy-seven thousand, fifty-nine".