67840136 has 32 divisors (see below), whose sum is σ = 156555840. Its totient is φ = 26837568.

The previous prime is 67840103. The next prime is 67840169. The reversal of 67840136 is 63104876.

It is an interprime number because it is at equal distance from previous prime (67840103) and next prime (67840169).

It is a junction number, because it is equal to n+sod(n) for n = 67840096 and 67840105.

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, 45866 + ... + 47321.

It is an arithmetic number, because the mean of its divisors is an integer number (4892370).

Almost surely, 2^67840136 is an apocalyptic number.

It is an amenable number.

67840136 is an abundant number, since it is smaller than the sum of its proper divisors (88715704).

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

67840136 is a wasteful number, since it uses less digits than its factorization.

67840136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93213 (or 93209 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 67840136 is about 8236.5123687153. The cubic root of 67840136 is about 407.8454015067.

It can be divided in two parts, 67840 and 136, that added together give a palindrome (67976).

The spelling of 67840136 in words is "sixty-seven million, eight hundred forty thousand, one hundred thirty-six".