67538247 has 8 divisors (see below), whose sum is σ = 102915456. Its totient is φ = 38593272.

The previous prime is 67538239. The next prime is 67538249. The reversal of 67538247 is 74283576.

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

It is not a de Polignac number, because 67538247 - 2³ = 67538239 is a prime.

It is a super-2 number, since 2×67538247² = 9122829615666018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67538199 and 67538208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67538249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1608033 + ... + 1608074.

It is an arithmetic number, because the mean of its divisors is an integer number (12864432).

Almost surely, 2^67538247 is an apocalyptic number.

67538247 is a deficient number, since it is larger than the sum of its proper divisors (35377209).

67538247 is a wasteful number, since it uses less digits than its factorization.

67538247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216117.

The product of its digits is 282240, while the sum is 42.

The square root of 67538247 is about 8218.1656712432. The cubic root of 67538247 is about 407.2395304360.

The spelling of 67538247 in words is "sixty-seven million, five hundred thirty-eight thousand, two hundred forty-seven".