67676767 has 16 divisors (see below), whose sum is σ = 70830432. Its totient is φ = 64627200.

The previous prime is 67676761. The next prime is 67676783. The reversal of 67676767 is 76767676.

67676767 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a cyclic number.

It is not a de Polignac number, because 67676767 - 2³ = 67676759 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

67676767 is an undulating number in base 10.

Its product of digits (3111696) is a multiple of the sum of its prime divisors (378).

67676767 is a modest number, since divided by 676767 gives 67 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67676761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493923 + ... + 494059.

It is an arithmetic number, because the mean of its divisors is an integer number (4426902).

Almost surely, 2^67676767 is an apocalyptic number.

67676767 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

67676767 is a deficient number, since it is larger than the sum of its proper divisors (3153665).

67676767 is a wasteful number, since it uses less digits than its factorization.

67676767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378.

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

The square root of 67676767 is about 8226.5890258357. The cubic root of 67676767 is about 407.5177545051.

Subtracting 67676767 from its reverse (76767676), we obtain a palindrome (9090909).

The spelling of 67676767 in words is "sixty-seven million, six hundred seventy-six thousand, seven hundred sixty-seven".