67740047 has 8 divisors (see below), whose sum is σ = 68685456. Its totient is φ = 66799872.

The previous prime is 67740017. The next prime is 67740059. The reversal of 67740047 is 74004776.

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

It is a cyclic number.

It is not a de Polignac number, because 67740047 - 2⁶ = 67739983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67739989 and 67740016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67740017) 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, 29648 + ... + 31850.

It is an arithmetic number, because the mean of its divisors is an integer number (8585682).

Almost surely, 2^67740047 is an apocalyptic number.

67740047 is a deficient number, since it is larger than the sum of its proper divisors (945409).

67740047 is a wasteful number, since it uses less digits than its factorization.

67740047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 67740047 is about 8230.4341926778. The cubic root of 67740047 is about 407.6447291000.

The spelling of 67740047 in words is "sixty-seven million, seven hundred forty thousand, forty-seven".