68705047 has 8 divisors (see below), whose sum is σ = 69342480. Its totient is φ = 68070720.

The previous prime is 68705029. The next prime is 68705107. The reversal of 68705047 is 74050786.

It is a happy number.

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 68705047 - 2⁷ = 68704919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68704997 and 68705015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68705647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70272 + ... + 71242.

It is an arithmetic number, because the mean of its divisors is an integer number (8667810).

Almost surely, 2^68705047 is an apocalyptic number.

68705047 is a deficient number, since it is larger than the sum of its proper divisors (637433).

68705047 is a wasteful number, since it uses less digits than its factorization.

68705047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 68705047 is about 8288.8507647321. The cubic root of 68705047 is about 409.5713286835.

It can be divided in two parts, 6870504 and 7, that multiplied together give a triangular number (48093528 = T₉₈₀₇).

The spelling of 68705047 in words is "sixty-eight million, seven hundred five thousand, forty-seven".