67742645 has 8 divisors (see below), whose sum is σ = 81526200. Its totient is φ = 54037440.

The previous prime is 67742629. The next prime is 67742669. The reversal of 67742645 is 54624776.

It can be written as a sum of positive squares in 4 ways, for example, as 15570916 + 52171729 = 3946^2 + 7223^2 .

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

It is not a de Polignac number, because 67742645 - 2⁴ = 67742629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17666 + ... + 21155.

It is an arithmetic number, because the mean of its divisors is an integer number (10190775).

Almost surely, 2^67742645 is an apocalyptic number.

It is an amenable number.

67742645 is a deficient number, since it is larger than the sum of its proper divisors (13783555).

67742645 is a wasteful number, since it uses less digits than its factorization.

67742645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39175.

The product of its digits is 282240, while the sum is 41.

The square root of 67742645 is about 8230.5920200190. The cubic root of 67742645 is about 407.6499404313.

The spelling of 67742645 in words is "sixty-seven million, seven hundred forty-two thousand, six hundred forty-five".