67676677 has 8 divisors (see below), whose sum is σ = 71876376. Its totient is φ = 63501312.

The previous prime is 67676671. The next prime is 67676681. The reversal of 67676677 is 77667676.

It can be written as a sum of positive squares in 4 ways, for example, as 8678916 + 58997761 = 2946^2 + 7681^2 .

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 67676677 - 2²³ = 59288069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67676671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178 + ... + 11635.

It is an arithmetic number, because the mean of its divisors is an integer number (8984547).

Almost surely, 2^67676677 is an apocalyptic number.

It is an amenable number.

67676677 is a deficient number, since it is larger than the sum of its proper divisors (4199699).

67676677 is a wasteful number, since it uses less digits than its factorization.

67676677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12167.

The product of its digits is 3111696, while the sum is 52.

The square root of 67676677 is about 8226.5835557660. The cubic root of 67676677 is about 407.5175738591.

Subtracting 67676677 from its reverse (77667676), we obtain a palindrome (9990999).

The spelling of 67676677 in words is "sixty-seven million, six hundred seventy-six thousand, six hundred seventy-seven".