67693639677 has 24 divisors (see below), whose sum is σ = 92656569600. Its totient is φ = 43955246016.

The previous prime is 67693639661. The next prime is 67693639681. The reversal of 67693639677 is 77693639676.

It is not a de Polignac number, because 67693639677 - 2⁴ = 67693639661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67693639697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1170324 + ... + 1226802.

It is an arithmetic number, because the mean of its divisors is an integer number (3860690400).

Almost surely, 2^67693639677 is an apocalyptic number.

67693639677 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

67693639677 is a deficient number, since it is larger than the sum of its proper divisors (24962929923).

67693639677 is an equidigital number, since it uses as much as digits as its factorization.

67693639677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56705 (or 56638 counting only the distinct ones).

The product of its digits is 324060912, while the sum is 69.

Subtracting 67693639677 from its reverse (77693639676), we obtain a palindrome (9999999999).

The spelling of 67693639677 in words is "sixty-seven billion, six hundred ninety-three million, six hundred thirty-nine thousand, six hundred seventy-seven".