66165077 has 4 divisors (see below), whose sum is σ = 72180096. Its totient is φ = 60150060.

The previous prime is 66165059. The next prime is 66165079. The reversal of 66165077 is 77056166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66165077 - 2¹⁰ = 66164053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66165077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66165079) 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, 3007493 + ... + 3007514.

It is an arithmetic number, because the mean of its divisors is an integer number (18045024).

Almost surely, 2^66165077 is an apocalyptic number.

It is an amenable number.

66165077 is a deficient number, since it is larger than the sum of its proper divisors (6015019).

66165077 is a wasteful number, since it uses less digits than its factorization.

66165077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6015018.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 66165077 is about 8134.1918467663. The cubic root of 66165077 is about 404.4606487093.

The spelling of 66165077 in words is "sixty-six million, one hundred sixty-five thousand, seventy-seven".