67768331 has 4 divisors (see below), whose sum is σ = 70105200. Its totient is φ = 65431464.

The previous prime is 67768321. The next prime is 67768357. The reversal of 67768331 is 13386776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67768331 - 2¹⁰ = 67767307 is a prime.

It is a super-2 number, since 2×67768331² = 9185093373051122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67768321) 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 3 ways as a sum of consecutive naturals, for example, 1168391 + ... + 1168448.

It is an arithmetic number, because the mean of its divisors is an integer number (17526300).

Almost surely, 2^67768331 is an apocalyptic number.

67768331 is a deficient number, since it is larger than the sum of its proper divisors (2336869).

67768331 is a wasteful number, since it uses less digits than its factorization.

67768331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336868.

The product of its digits is 127008, while the sum is 41.

The square root of 67768331 is about 8232.1522702146. The cubic root of 67768331 is about 407.7014568393.

The spelling of 67768331 in words is "sixty-seven million, seven hundred sixty-eight thousand, three hundred thirty-one".