67746768 has 40 divisors (see below), whose sum is σ = 185309568. Its totient is φ = 21253632.

The previous prime is 67746737. The next prime is 67746769. The reversal of 67746768 is 86764776.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 67746768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67746769) 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, 40696 + ... + 42327.

Almost surely, 2^67746768 is an apocalyptic number.

67746768 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

67746768 is an abundant number, since it is smaller than the sum of its proper divisors (117562800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67746768 is a wasteful number, since it uses less digits than its factorization.

67746768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83051 (or 83045 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 51.

The square root of 67746768 is about 8230.8424842175. The cubic root of 67746768 is about 407.6582104883.

The spelling of 67746768 in words is "sixty-seven million, seven hundred forty-six thousand, seven hundred sixty-eight".