66050669 has 4 divisors (see below), whose sum is σ = 69527040. Its totient is φ = 62574300.

The previous prime is 66050659. The next prime is 66050681. The reversal of 66050669 is 96605066.

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 66050669 - 2²⁴ = 49273453 is a prime.

It is a super-2 number, since 2×66050669² = 8725381750695122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66050659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1738157 + ... + 1738194.

It is an arithmetic number, because the mean of its divisors is an integer number (17381760).

Almost surely, 2^66050669 is an apocalyptic number.

It is an amenable number.

66050669 is a deficient number, since it is larger than the sum of its proper divisors (3476371).

66050669 is a wasteful number, since it uses less digits than its factorization.

66050669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476370.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 66050669 is about 8127.1562677237. The cubic root of 66050669 is about 404.2273925736.

The spelling of 66050669 in words is "sixty-six million, fifty thousand, six hundred sixty-nine".