68741647 has 4 divisors (see below), whose sum is σ = 74029480. Its totient is φ = 63453816.

The previous prime is 68741627. The next prime is 68741653. The reversal of 68741647 is 74614786.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68741647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68741627) 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, 2643897 + ... + 2643922.

It is an arithmetic number, because the mean of its divisors is an integer number (18507370).

Almost surely, 2^68741647 is an apocalyptic number.

68741647 is a deficient number, since it is larger than the sum of its proper divisors (5287833).

68741647 is a wasteful number, since it uses less digits than its factorization.

68741647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5287832.

The product of its digits is 225792, while the sum is 43.

The square root of 68741647 is about 8291.0582557355. The cubic root of 68741647 is about 409.6440436209.

The spelling of 68741647 in words is "sixty-eight million, seven hundred forty-one thousand, six hundred forty-seven".