68454047 has 4 divisors (see below), whose sum is σ = 68541816. Its totient is φ = 68366280.

The previous prime is 68454037. The next prime is 68454059. The reversal of 68454047 is 74045486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68454047 - 2⁴ = 68454031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68454047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68454037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42704 + ... + 44277.

It is an arithmetic number, because the mean of its divisors is an integer number (17135454).

Almost surely, 2^68454047 is an apocalyptic number.

68454047 is a deficient number, since it is larger than the sum of its proper divisors (87769).

68454047 is an equidigital number, since it uses as much as digits as its factorization.

68454047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87768.

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 68454047 is about 8273.6960906236. The cubic root of 68454047 is about 409.0719580551.

The spelling of 68454047 in words is "sixty-eight million, four hundred fifty-four thousand, forty-seven".