66962665 has 24 divisors (see below), whose sum is σ = 101976192. Its totient is φ = 41741280.

The previous prime is 66962659. The next prime is 66962713. The reversal of 66962665 is 56626966.

It is not a de Polignac number, because 66962665 - 2¹³ = 66954473 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9729 + ... + 15118.

It is an arithmetic number, because the mean of its divisors is an integer number (4249008).

Almost surely, 2^66962665 is an apocalyptic number.

It is an amenable number.

66962665 is a deficient number, since it is larger than the sum of its proper divisors (35013527).

66962665 is a wasteful number, since it uses less digits than its factorization.

66962665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24877 (or 24870 counting only the distinct ones).

The product of its digits is 699840, while the sum is 46.

The square root of 66962665 is about 8183.0718559719. The cubic root of 66962665 is about 406.0793542867.

The spelling of 66962665 in words is "sixty-six million, nine hundred sixty-two thousand, six hundred sixty-five".