67135649 has 8 divisors (see below), whose sum is σ = 78800448. Its totient is φ = 55989360.

The previous prime is 67135631. The next prime is 67135661. The reversal of 67135649 is 94653176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67135649 - 2¹² = 67131553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67135619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129347 + ... + 129864.

It is an arithmetic number, because the mean of its divisors is an integer number (9850056).

Almost surely, 2^67135649 is an apocalyptic number.

It is an amenable number.

67135649 is a deficient number, since it is larger than the sum of its proper divisors (11664799).

67135649 is a wasteful number, since it uses less digits than its factorization.

67135649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259255.

The product of its digits is 136080, while the sum is 41.

The square root of 67135649 is about 8193.6346635666. The cubic root of 67135649 is about 406.4287272283.

The spelling of 67135649 in words is "sixty-seven million, one hundred thirty-five thousand, six hundred forty-nine".