67773697 has 8 divisors (see below), whose sum is σ = 70738920. Its totient is φ = 64871040.

The previous prime is 67773661. The next prime is 67773707. The reversal of 67773697 is 79637776.

It can be written as a sum of positive squares in 4 ways, for example, as 24336 + 67749361 = 156^2 + 8231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67773697 - 2⁷ = 67773569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67773637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13422 + ... + 17767.

It is an arithmetic number, because the mean of its divisors is an integer number (8842365).

Almost surely, 2^67773697 is an apocalyptic number.

It is an amenable number.

67773697 is a deficient number, since it is larger than the sum of its proper divisors (2965223).

67773697 is a wasteful number, since it uses less digits than its factorization.

67773697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31283.

The product of its digits is 2333772, while the sum is 52.

The square root of 67773697 is about 8232.4781809611. The cubic root of 67773697 is about 407.7122173634.

The spelling of 67773697 in words is "sixty-seven million, seven hundred seventy-three thousand, six hundred ninety-seven".