67135312 has 40 divisors (see below), whose sum is σ = 140354856. Its totient is φ = 30990336.

The previous prime is 67135307. The next prime is 67135357. The reversal of 67135312 is 21353176.

It can be written as a sum of positive squares in 4 ways, for example, as 12138256 + 54997056 = 3484^2 + 7416^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12088 + ... + 16744.

Almost surely, 2^67135312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67135312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70177428).

67135312 is an abundant number, since it is smaller than the sum of its proper divisors (73219544).

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

67135312 is a wasteful number, since it uses less digits than its factorization.

67135312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4729 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 67135312 is about 8193.6140987967. The cubic root of 67135312 is about 406.4280471787.

Adding to 67135312 its reverse (21353176), we get a palindrome (88488488).

The spelling of 67135312 in words is "sixty-seven million, one hundred thirty-five thousand, three hundred twelve".