67695459677 has 4 divisors (see below), whose sum is σ = 67808474400. Its totient is φ = 67582444956.

The previous prime is 67695459659. The next prime is 67695459697. The reversal of 67695459677 is 77695459676.

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 a de Polignac number, because none of the positive numbers 2^k-67695459677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67695459677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67695459607) 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, 56506463 + ... + 56507660.

It is an arithmetic number, because the mean of its divisors is an integer number (16952118600).

Almost surely, 2^67695459677 is an apocalyptic number.

It is an amenable number.

67695459677 is a deficient number, since it is larger than the sum of its proper divisors (113014723).

67695459677 is a wasteful number, since it uses less digits than its factorization.

67695459677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113014722.

The product of its digits is 600112800, while the sum is 71.

Subtracting 67695459677 from its reverse (77695459676), we obtain a palindrome (9999999999).

The spelling of 67695459677 in words is "sixty-seven billion, six hundred ninety-five million, four hundred fifty-nine thousand, six hundred seventy-seven".