68201647 has 4 divisors (see below), whose sum is σ = 71166960. Its totient is φ = 65236336.

The previous prime is 68201633. The next prime is 68201669. The reversal of 68201647 is 74610286.

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-68201647 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 (68201047) 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, 1482622 + ... + 1482667.

It is an arithmetic number, because the mean of its divisors is an integer number (17791740).

Almost surely, 2^68201647 is an apocalyptic number.

68201647 is a deficient number, since it is larger than the sum of its proper divisors (2965313).

68201647 is a wasteful number, since it uses less digits than its factorization.

68201647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965312.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 68201647 is about 8258.4288457309. The cubic root of 68201647 is about 408.5685696446.

The spelling of 68201647 in words is "sixty-eight million, two hundred one thousand, six hundred forty-seven".