68713655 has 4 divisors (see below), whose sum is σ = 82456392. Its totient is φ = 54970920.

The previous prime is 68713651. The next prime is 68713657. The reversal of 68713655 is 55631786.

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

It is not a de Polignac number, because 68713655 - 2² = 68713651 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 (68713651) 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, 6871361 + ... + 6871370.

It is an arithmetic number, because the mean of its divisors is an integer number (20614098).

Almost surely, 2^68713655 is an apocalyptic number.

68713655 is a deficient number, since it is larger than the sum of its proper divisors (13742737).

68713655 is a wasteful number, since it uses less digits than its factorization.

68713655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13742736.

The product of its digits is 151200, while the sum is 41.

The square root of 68713655 is about 8289.3700001870. The cubic root of 68713655 is about 409.5884329231.

The spelling of 68713655 in words is "sixty-eight million, seven hundred thirteen thousand, six hundred fifty-five".