66165045 has 16 divisors (see below), whose sum is σ = 105984960. Its totient is φ = 35247744.

The previous prime is 66165031. The next prime is 66165059. The reversal of 66165045 is 54056166.

It is an interprime number because it is at equal distance from previous prime (66165031) and next prime (66165059).

It is not a de Polignac number, because 66165045 - 2⁸ = 66164789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66164997 and 66165015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14982 + ... + 18888.

It is an arithmetic number, because the mean of its divisors is an integer number (6624060).

Almost surely, 2^66165045 is an apocalyptic number.

It is an amenable number.

66165045 is a deficient number, since it is larger than the sum of its proper divisors (39819915).

66165045 is a wasteful number, since it uses less digits than its factorization.

66165045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 66165045 is about 8134.1898797606. The cubic root of 66165045 is about 404.4605835050.

The spelling of 66165045 in words is "sixty-six million, one hundred sixty-five thousand, forty-five".