67695689 has 4 divisors (see below), whose sum is σ = 71258640. Its totient is φ = 64132740.

The previous prime is 67695679. The next prime is 67695703. The reversal of 67695689 is 98659676.

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 67695689 - 2¹² = 67691593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67695619) 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, 1781447 + ... + 1781484.

It is an arithmetic number, because the mean of its divisors is an integer number (17814660).

Almost surely, 2^67695689 is an apocalyptic number.

It is an amenable number.

67695689 is a deficient number, since it is larger than the sum of its proper divisors (3562951).

67695689 is a wasteful number, since it uses less digits than its factorization.

67695689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562950.

The product of its digits is 4898880, while the sum is 56.

The square root of 67695689 is about 8227.7389968326. The cubic root of 67695689 is about 407.5557307696. Note that the first 3 decimals are identical.

The spelling of 67695689 in words is "sixty-seven million, six hundred ninety-five thousand, six hundred eighty-nine".