68947049 has 4 divisors (see below), whose sum is σ = 69006036. Its totient is φ = 68888064.

The previous prime is 68947033. The next prime is 68947051. The reversal of 68947049 is 94074986.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43626025 + 25321024 = 6605^2 + 5032^2 .

It is a cyclic number.

It is not a de Polignac number, because 68947049 - 2⁴ = 68947033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68946994 and 68947012.

It is not an unprimeable number, because it can be changed into a prime (68947009) 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, 27704 + ... + 30089.

It is an arithmetic number, because the mean of its divisors is an integer number (17251509).

Almost surely, 2^68947049 is an apocalyptic number.

It is an amenable number.

68947049 is a deficient number, since it is larger than the sum of its proper divisors (58987).

68947049 is a wasteful number, since it uses less digits than its factorization.

68947049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58986.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 68947049 is about 8303.4359755465. The cubic root of 68947049 is about 410.0516472713.

The spelling of 68947049 in words is "sixty-eight million, nine hundred forty-seven thousand, forty-nine".