67691344 has 30 divisors (see below), whose sum is σ = 152566314. Its totient is φ = 29010240.

The previous prime is 67691341. The next prime is 67691347. The reversal of 67691344 is 44319676.

It is an interprime number because it is at equal distance from previous prime (67691341) and next prime (67691347).

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 16711744 = 7140^2 + 4088^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67691297 and 67691306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67691341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42387 + ... + 43954.

Almost surely, 2^67691344 is an apocalyptic number.

It is an amenable number.

67691344 is an abundant number, since it is smaller than the sum of its proper divisors (84874970).

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

67691344 is a wasteful number, since it uses less digits than its factorization.

67691344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86363 (or 86350 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 67691344 is about 8227.4749467865. The cubic root of 67691344 is about 407.5470110241.

The spelling of 67691344 in words is "sixty-seven million, six hundred ninety-one thousand, three hundred forty-four".