66773069 has 4 divisors (see below), whose sum is σ = 72843360. Its totient is φ = 60702780.

The previous prime is 66773033. The next prime is 66773089. The reversal of 66773069 is 96037766.

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 66773069 - 2⁸ = 66772813 is a prime.

It is a super-2 number, since 2×66773069² = 8917285487357522, 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 (66773089) 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, 3035129 + ... + 3035150.

It is an arithmetic number, because the mean of its divisors is an integer number (18210840).

Almost surely, 2^66773069 is an apocalyptic number.

It is an amenable number.

66773069 is a deficient number, since it is larger than the sum of its proper divisors (6070291).

66773069 is a wasteful number, since it uses less digits than its factorization.

66773069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070290.

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 66773069 is about 8171.4789970972. The cubic root of 66773069 is about 405.6957385356.

The spelling of 66773069 in words is "sixty-six million, seven hundred seventy-three thousand, sixty-nine".